diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index b5e89001e..e87f0d53d 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -12,6 +12,7 @@
 - [services] All services that were previously available in `org.eclipse.syson.sysml.textual` package of `syson-sysml-metamodel` module have been moved to `org.eclipse.syson.sysml.metamodel.services.textual` package of `syson-sysml-metamodel-services` module.
 - [services] All services that were previously available in `org.eclipse.syson.sysml.textual.utils` package of `syson-sysml-metamodel` module have been moved to `org.eclipse.syson.sysml.metamodel.services.textual.utils` package of `syson-sysml-metamodel-services` module.
 - [services] All services that were previously available in `org.eclipse.syson.sysml.util` package of `syson-sysml-metamodel` module have been moved to `org.eclipse.syson.sysml.metamodel.util` package of `syson-sysml-metamodel-services` module.
+- [services] All methods from `org.eclipse.syson.util.AQLUtils` except `aqlString` and `aqlSequence` have been removed.
 - [frontend] The `variables.css` file, which used to define custom colors an typography settings has been removed.
 It has long been unused by Sirius Web itself (since the transition to MUI).
 
@@ -39,8 +40,10 @@ It has long been unused by Sirius Web itself (since the transition to MUI).
 Before, the selection dialog option with selection allowed choosing between all _timeslice/snapshot_ types.
 Now, the choice is restricted to the _timeslice/snapshot_ type that match the graphical node type on which the tool is applied.
 - https://github.com/eclipse-syson/syson/issues/2119[#2119] [details] Display expressions values in the _Details_ view and allow to edit them from there.
-- https://github.com/eclipse-syson/syson/issues/2251[#2251] [explorer] Allow expression-related operations on their parent element
-- https://github.com/eclipse-syson/syson/issues/2270[#2270] [diagram] Add dedicated tools to diagram elements palette to create/edit/delete expressions
+- https://github.com/eclipse-syson/syson/issues/2251[#2251] [explorer] Allow expression-related operations on their parent element.
+- https://github.com/eclipse-syson/syson/issues/2270[#2270] [diagram] Add dedicated tools to diagram elements palette to create/edit/delete expressions.
+- https://github.com/eclipse-syson/syson/issues/2269[#2269] [diagram] When using direct edit on feature elements which have a value expression (e.g. an `Attribute` with a default value defined), the expression part (after the `=` sign) is no longer part of the initial direct edit value, and will be ignored if supplied in the new text value.
+Users should use the dedicated tools to edit expressions instead, as they ensure only valid expressions (with all names resolving) are accepted.
 
 === New features
 
diff --git a/backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVDirectEditTests.java b/backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVDirectEditTests.java
index a4044fb3c..558321a53 100644
--- a/backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVDirectEditTests.java
+++ b/backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVDirectEditTests.java
@@ -22,6 +22,7 @@
 import java.util.UUID;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Consumer;
+import java.util.function.Supplier;
 
 import org.eclipse.sirius.components.collaborative.diagrams.dto.DiagramEventInput;
 import org.eclipse.sirius.components.collaborative.diagrams.dto.DiagramRefreshedEventPayload;
@@ -35,6 +36,7 @@
 import org.eclipse.sirius.web.tests.services.api.IGivenInitialServerState;
 import org.eclipse.syson.AbstractIntegrationTests;
 import org.eclipse.syson.GivenSysONServer;
+import org.eclipse.syson.application.controllers.expressions.graphql.CreateExpressionMutationRunner;
 import org.eclipse.syson.application.data.GeneralViewDirectEditTestProjectData;
 import org.eclipse.syson.application.data.GeneralViewItemAndAttributeProjectData;
 import org.eclipse.syson.application.data.GeneralViewPartUsageRedefinitionProjectData;
@@ -42,6 +44,8 @@
 import org.eclipse.syson.services.diagrams.api.IGivenDiagramSubscription;
 import org.eclipse.syson.sysml.PartUsage;
 import org.eclipse.syson.sysml.PortionKind;
+import org.eclipse.syson.sysml.dto.CreateExpressionInput;
+import org.eclipse.syson.sysml.dto.CreateExpressionSuccessPayload;
 import org.eclipse.syson.sysml.metamodel.helper.LabelConstants;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.DisplayName;
@@ -72,6 +76,9 @@ public class GVDirectEditTests extends AbstractIntegrationTests {
     @Autowired
     private EditLabelMutationRunner editLabelMutationRunner;
 
+    @Autowired
+    private CreateExpressionMutationRunner createExpressionMutationRunner;
+
     @Autowired
     private IObjectSearchService objectSearchService;
 
@@ -395,7 +402,7 @@ public void directEditUsingShortNameAndScope() {
                 .verify(Duration.ofSeconds(10));
     }
 
-    @DisplayName("GIVEN a diagram with an attribute, WHEN we direct edit with an operation using an unimported namespace, THEN the attribute is correctly set")
+    @DisplayName("GIVEN a diagram with an attribute, WHEN we set its value to an expression using an unimported namespace, THEN the attribute is correctly set")
     @GivenSysONServer({ GeneralViewItemAndAttributeProjectData.SCRIPT_PATH })
     @Test
     public void directEditOperationUsingUnImportedNameSpaceName() {
@@ -407,6 +414,7 @@ public void directEditOperationUsingUnImportedNameSpaceName() {
 
         var diagramId = new AtomicReference<String>();
         var partNodeId = new AtomicReference<String>();
+        var partNodeTargetId = new AtomicReference<String>();
         var partNodeLabelId = new AtomicReference<String>();
 
         Consumer<Object> initialDiagramContentConsumer = assertRefreshedDiagramThat(diagram -> {
@@ -414,26 +422,19 @@ public void directEditOperationUsingUnImportedNameSpaceName() {
             var partNode = new DiagramNavigator(diagram).nodeWithLabel("x1").getNode();
             partNodeId.set(partNode.getId());
             partNodeLabelId.set(partNode.getInsideLabel().getId());
+            partNodeTargetId.set(partNode.getTargetObjectId());
         });
 
-        Runnable editLabel = () -> {
-            var input = new EditLabelInput(UUID.randomUUID(), GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID, diagramId.get(), partNodeLabelId.get(), "t1 = 1[g]");
-            var result = this.editLabelMutationRunner.run(input);
-
-            String typename = JsonPath.read(result.data(), "$.data.editLabel.__typename");
-            assertThat(typename).isEqualTo(EditLabelSuccessPayload.class.getSimpleName());
-            List<String> messages = JsonPath.read(result.data(), "$.data.editLabel.messages[*].body");
-            assertThat(messages).hasSize(0);
-        };
+        Runnable createExpression = this.createExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID, partNodeTargetId::get, "1 [g]");
 
         Consumer<Object> updatedDiagramContentMatcher = assertRefreshedDiagramThat(diagram -> {
             var node = new DiagramNavigator(diagram).nodeWithId(partNodeId.get()).getNode();
-            DiagramAssertions.assertThat(node.getInsideLabel()).hasText("t1 = 1 [g]");
+            DiagramAssertions.assertThat(node.getInsideLabel()).hasText("x1 = 1 [g]");
         });
 
         StepVerifier.create(flux)
                 .consumeNextWith(initialDiagramContentConsumer)
-                .then(editLabel)
+                .then(createExpression)
                 .consumeNextWith(updatedDiagramContentMatcher)
                 .thenCancel()
                 .verify(Duration.ofSeconds(10));
@@ -622,10 +623,10 @@ public void directEditMultiplicityWithFeatureTyping() {
                 .verify(Duration.ofSeconds(10));
     }
 
-    @DisplayName("GIVEN a diagram with a part, WHEN we direct edit with multiplicity and operation, THEN the part is correctly set only if the multiplicity is before the operation")
+    @DisplayName("GIVEN a diagram with a part, WHEN we direct edit with multiplicity, THEN the multiplicity is correctly set")
     @GivenSysONServer({ GeneralViewItemAndAttributeProjectData.SCRIPT_PATH })
     @Test
-    public void directEditMultiplicityWithOperation() {
+    public void directEditMultiplicity() {
         var diagramEventInput = new DiagramEventInput(UUID.randomUUID(),
                 GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID,
                 GeneralViewItemAndAttributeProjectData.GraphicalIds.DIAGRAM_ID);
@@ -644,7 +645,7 @@ public void directEditMultiplicityWithOperation() {
         });
 
         Runnable editLabelWithMultiplicityBefore = () -> {
-            var input = new EditLabelInput(UUID.randomUUID(), GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID, diagramId.get(), partNodeLabelId.get(), "t1 [4] = 1[g]");
+            var input = new EditLabelInput(UUID.randomUUID(), GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID, diagramId.get(), partNodeLabelId.get(), "t1 [4]");
             var result = this.editLabelMutationRunner.run(input);
 
             String typename = JsonPath.read(result.data(), "$.data.editLabel.__typename");
@@ -653,20 +654,7 @@ public void directEditMultiplicityWithOperation() {
             assertThat(messages).hasSize(0);
         };
 
-        Runnable editLabelWithMultiplicityAfter = () -> {
-            var input = new EditLabelInput(UUID.randomUUID(), GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID, diagramId.get(), partNodeLabelId.get(), "t1 = 1[g] [4]");
-            var result = this.editLabelMutationRunner.run(input);
-
-            String typename = JsonPath.read(result.data(), "$.data.editLabel.__typename");
-            assertThat(typename).isEqualTo(EditLabelSuccessPayload.class.getSimpleName());
-        };
-
         Consumer<Object> updatedDiagramContentMatcherBefore = assertRefreshedDiagramThat(diagram -> {
-            var node = new DiagramNavigator(diagram).nodeWithId(partNodeId.get()).getNode();
-            DiagramAssertions.assertThat(node.getInsideLabel()).hasText("t1 [4] = 1 [g]");
-        });
-
-        Consumer<Object> updatedDiagramContentMatcherAfter = assertRefreshedDiagramThat(diagram -> {
             var node = new DiagramNavigator(diagram).nodeWithId(partNodeId.get()).getNode();
             DiagramAssertions.assertThat(node.getInsideLabel()).hasText("t1 [4]");
         });
@@ -675,8 +663,6 @@ public void directEditMultiplicityWithOperation() {
                 .consumeNextWith(initialDiagramContentConsumer)
                 .then(editLabelWithMultiplicityBefore)
                 .consumeNextWith(updatedDiagramContentMatcherBefore)
-                .then(editLabelWithMultiplicityAfter)
-                .consumeNextWith(updatedDiagramContentMatcherAfter)
                 .thenCancel()
                 .verify(Duration.ofSeconds(10));
     }
@@ -746,4 +732,13 @@ public void directEditRedefinitionWithSameName() {
                 .thenCancel()
                 .verify(Duration.ofSeconds(10));
     }
+
+    private Runnable createExpression(String editingContextId, Supplier<String> parentElementId, String expressionContent) {
+        return () -> {
+            var input = new CreateExpressionInput(UUID.randomUUID(), editingContextId, parentElementId.get(), expressionContent);
+            var result = this.createExpressionMutationRunner.run(input);
+            String typename = JsonPath.read(result.data(), "$.data.createExpression.__typename");
+            assertThat(typename).isEqualTo(CreateExpressionSuccessPayload.class.getSimpleName());
+        };
+    }
 }
diff --git a/backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVItemAndAttributeExpressionTests.java b/backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVItemAndAttributeExpressionTests.java
index 7a5bdb1d1..23923394b 100644
--- a/backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVItemAndAttributeExpressionTests.java
+++ b/backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVItemAndAttributeExpressionTests.java
@@ -15,14 +15,18 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.eclipse.sirius.components.diagrams.tests.DiagramEventPayloadConsumer.assertRefreshedDiagramThat;
 
+import com.jayway.jsonpath.JsonPath;
+
 import java.time.Duration;
 import java.util.List;
 import java.util.UUID;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Consumer;
+import java.util.function.Supplier;
 
 import org.eclipse.sirius.components.collaborative.diagrams.dto.DiagramEventInput;
 import org.eclipse.sirius.components.collaborative.diagrams.dto.DiagramRefreshedEventPayload;
+import org.eclipse.sirius.components.core.api.SuccessPayload;
 import org.eclipse.sirius.components.diagrams.Diagram;
 import org.eclipse.sirius.components.diagrams.Edge;
 import org.eclipse.sirius.components.diagrams.InsideLabel;
@@ -38,9 +42,17 @@
 import org.eclipse.syson.application.controllers.diagrams.testers.DeleteToolTester;
 import org.eclipse.syson.application.controllers.diagrams.testers.DirectEditInitialLabelTester;
 import org.eclipse.syson.application.controllers.diagrams.testers.DirectEditTester;
+import org.eclipse.syson.application.controllers.expressions.graphql.CreateExpressionMutationRunner;
+import org.eclipse.syson.application.controllers.expressions.graphql.DeleteExpressionMutationRunner;
+import org.eclipse.syson.application.controllers.expressions.graphql.EditExpressionMutationRunner;
 import org.eclipse.syson.application.data.GeneralViewItemAndAttributeProjectData;
+import org.eclipse.syson.application.expressions.dto.DeleteExpressionInput;
 import org.eclipse.syson.services.diagrams.DiagramComparator;
 import org.eclipse.syson.services.diagrams.api.IGivenDiagramSubscription;
+import org.eclipse.syson.sysml.dto.CreateExpressionInput;
+import org.eclipse.syson.sysml.dto.CreateExpressionSuccessPayload;
+import org.eclipse.syson.sysml.dto.EditExpressionInput;
+import org.eclipse.syson.sysml.dto.EditExpressionSuccessPayload;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
@@ -57,6 +69,7 @@
  * @author Arthur Daussy
  */
 @Transactional
+@SuppressWarnings("checkstyle:MultipleStringLiterals")
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 public class GVItemAndAttributeExpressionTests extends AbstractIntegrationTests {
 
@@ -78,6 +91,15 @@ public class GVItemAndAttributeExpressionTests extends AbstractIntegrationTests
     @Autowired
     private DeleteToolRunner deleteFromDiagramRunner;
 
+    @Autowired
+    private CreateExpressionMutationRunner createExpressionMutationRunner;
+
+    @Autowired
+    private EditExpressionMutationRunner editExpressionMutationRunner;
+
+    @Autowired
+    private DeleteExpressionMutationRunner deleteExpressionMutationRunner;
+
     private DirectEditInitialLabelTester directEditInitialLabelTester;
 
     private DirectEditTester directEditTester;
@@ -132,8 +154,9 @@ public void nestedBinaryOperatorExpressionWithNameOverlapping() {
         Runnable directEditInitialLabelCheck = this.directEditInitialLabelTester.checkDirectEditInitialLabelOnNode(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
                 "x1");
 
-        Runnable directEditInsideLabelCheck = this.directEditTester.directEditInsideLabel(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID, "x1 = x2 + x3 + 4.5");
-        Consumer<Object> directEditInsideLabelDiagramCheck = assertRefreshedDiagramThat(newDiagram -> {
+        Runnable createAttributeValueExpression = this.createExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID, GeneralViewItemAndAttributeProjectData.SemanticIds.P1_1_X1_ID,
+                "x2 + x3 + 4.5");
+        Consumer<Object> createAttributeValueExpressionDiagramCheck = assertRefreshedDiagramThat(newDiagram -> {
             DiagramNavigator diagramNavigator = new DiagramNavigator(newDiagram);
 
             InsideLabel newLabel = diagramNavigator.nodeWithId(GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID).getNode().getInsideLabel();
@@ -142,11 +165,12 @@ public void nestedBinaryOperatorExpressionWithNameOverlapping() {
 
         // Using qualified name but keep pointing to attributes in P1_1
         Runnable directEditInitialLabelCheck2 = this.directEditInitialLabelTester.checkDirectEditInitialLabelOnNode(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
-                "x1 = x2 + x3 + 4.5");
+                "x1");
 
-        Runnable directEditInsideLabelDiagramCheck2 = this.directEditTester.directEditInsideLabel(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
-                "x1 = RootPackage::p1::p1_1::x3 - RootPackage::p1::p1_1::x2 - 4.5"); // We use simple name for label
-        Consumer<Object> directEditInsideLabelDiagramCheck3 = assertRefreshedDiagramThat(newDiagram -> {
+        Runnable editExpression = this.editExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID,
+                () -> GeneralViewItemAndAttributeProjectData.SemanticIds.P1_1_X1_ID,
+                "RootPackage::p1::p1_1::x3 - RootPackage::p1::p1_1::x2 - 4.5"); // We use simple name for label
+        Consumer<Object> editExpressionLabelDiagramCheck = assertRefreshedDiagramThat(newDiagram -> {
             DiagramNavigator diagramNavigator = new DiagramNavigator(newDiagram);
 
             InsideLabel newLabel = diagramNavigator.nodeWithId(GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID).getNode().getInsideLabel();
@@ -155,11 +179,11 @@ public void nestedBinaryOperatorExpressionWithNameOverlapping() {
 
         // Now change the target to attributes defined in P1
         Runnable directEditInitialLabelCheck3 = this.directEditInitialLabelTester.checkDirectEditInitialLabelOnNode(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
-                "x1 = x3 - x2 - 4.5");
+                "x1");
 
-        Runnable directEditInsideLabelCheck4 = this.directEditTester.directEditInsideLabel(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
-                "x1 = RootPackage::p1::x3 / RootPackage::p1::x3 * 10");
-        Consumer<Object> directEditInsideLabelDiagramCheck4 = assertRefreshedDiagramThat(newDiagram -> {
+        Runnable editExpression2 = this.editExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID, () -> GeneralViewItemAndAttributeProjectData.SemanticIds.P1_1_X1_ID,
+                "RootPackage::p1::x3 / RootPackage::p1::x3 * 10");
+        Consumer<Object> editExpressionLabelDiagramCheck2 = assertRefreshedDiagramThat(newDiagram -> {
             DiagramNavigator diagramNavigator = new DiagramNavigator(newDiagram);
 
             InsideLabel newLabel = diagramNavigator.nodeWithId(GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID).getNode().getInsideLabel();
@@ -169,19 +193,19 @@ public void nestedBinaryOperatorExpressionWithNameOverlapping() {
         // Here the direct edit input needs to explicitly give the qualified name of x3 since the default x3 is the one
         // located in p1_1 whereas we are targeting RootPackage::p1::x3
         Runnable directEditInitialLabelCheck5 = this.directEditInitialLabelTester.checkDirectEditInitialLabelOnNode(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
-                "x1 = RootPackage::p1::x3 / RootPackage::p1::x3 * 10");
+                "x1");
 
         StepVerifier.create(flux)
                 .consumeNextWith(initialDiagramContentConsumer)
                 .then(directEditInitialLabelCheck)
-                .then(directEditInsideLabelCheck)
-                .consumeNextWith(directEditInsideLabelDiagramCheck)
+                .then(createAttributeValueExpression)
+                .consumeNextWith(createAttributeValueExpressionDiagramCheck)
                 .then(directEditInitialLabelCheck2)
-                .then(directEditInsideLabelDiagramCheck2)
-                .consumeNextWith(directEditInsideLabelDiagramCheck3)
+                .then(editExpression)
+                .consumeNextWith(editExpressionLabelDiagramCheck)
                 .then(directEditInitialLabelCheck3)
-                .then(directEditInsideLabelCheck4)
-                .consumeNextWith(directEditInsideLabelDiagramCheck4)
+                .then(editExpression2)
+                .consumeNextWith(editExpressionLabelDiagramCheck2)
                 .then(directEditInitialLabelCheck5)
                 .thenCancel()
                 .verify(Duration.ofSeconds(10));
@@ -209,18 +233,20 @@ public void payloadFeatureChain() {
             OutsideLabel newLabel = diagramNavigator.nodeWithId(GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_BORDERED_NODE_ID).getNode().getOutsideLabels().get(0);
             // Bordered node do not display the feature value in their label
             assertThat(newLabel.text()).isEqualTo("a2_1");
+            // But the item in the compartment does
+            InsideLabel itemLabel = diagramNavigator.nodeWithId(GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID).getNode().getInsideLabel();
+            assertThat(itemLabel.getText()).isEqualTo("in a2_1 = a1.a1_2");
         });
 
-        // But the item in the compartment does
+        // Direct edit initial text does not include the "= ..." part
         Runnable directEditInitialLabelCheck2 = this.directEditInitialLabelTester.checkDirectEditInitialLabelOnNode(diagram,
                 GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID,
-                "in a2_1 = a1.a1_2");
+                "in a2_1");
 
         // Simple test on the icon and label node representing a2_1
-        Runnable directEditInsideLabelCheck2 = this.directEditTester.directEditInsideLabel(diagram,
-                GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID,
-                "in a2_1 = a1.a1_3.i2_1.i3_1");
-        Consumer<Object> directEditInsideLabelDiagramCheck2 = assertRefreshedDiagramThat(newDiagram -> {
+        Runnable editExpression = this.editExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID, () -> GeneralViewItemAndAttributeProjectData.SemanticIds.A2_1_ID,
+                "a1.a1_3.i2_1.i3_1");
+        Consumer<Object> editExpressionDiagramCheck = assertRefreshedDiagramThat(newDiagram -> {
             DiagramNavigator diagramNavigator = new DiagramNavigator(newDiagram);
             InsideLabel newLabel = diagramNavigator.nodeWithId(GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID).getNode().getInsideLabel();
             assertThat(newLabel.getText()).isEqualTo("in a2_1 = a1.a1_3.i2_1.i3_1");
@@ -232,8 +258,8 @@ public void payloadFeatureChain() {
                 .then(directEditOutsideLabelCheck1)
                 .consumeNextWith(directEditOutsideLabelDiagramCheck1)
                 .then(directEditInitialLabelCheck2)
-                .then(directEditInsideLabelCheck2)
-                .consumeNextWith(directEditInsideLabelDiagramCheck2)
+                .then(editExpression)
+                .consumeNextWith(editExpressionDiagramCheck)
                 .thenCancel()
                 .verify(Duration.ofSeconds(10));
     }
@@ -252,48 +278,48 @@ public void attributeWithBranketExpression() {
                 "x1");
 
         // Inside P1 there is no import so we need qualified name
-        Runnable directEditInsideLabelCheck1 = this.directEditTester.directEditInsideLabel(diagram,
-                GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_X1_ID,
-                "a2_1 = 45 [SI::kg]");
-        Consumer<Object> directEditInsideLabelDiagramCheck1 = assertRefreshedDiagramThat(newDiagram -> {
+        Runnable createExpression = this.createExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID,
+                GeneralViewItemAndAttributeProjectData.SemanticIds.P1_X1_ID,
+                "45 [SI::kg]");
+        Consumer<Object> createExpressionDiagramCheck = assertRefreshedDiagramThat(newDiagram -> {
             DiagramNavigator diagramNavigator = new DiagramNavigator(newDiagram);
             InsideLabel newLabel = diagramNavigator.nodeWithId(GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_X1_ID).getNode().getInsideLabel();
-            assertThat(newLabel.getText()).isEqualTo("a2_1 = 45 [kg]"); // Use short name for displaying bracket expression
+            assertThat(newLabel.getText()).isEqualTo("x1 = 45 [kg]"); // Use short name for displaying bracket
+                                                                      // expression
         });
 
         Runnable directEditInitialLabelCheck2 = this.directEditInitialLabelTester.checkDirectEditInitialLabelOnNode(diagram,
                 GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_X1_ID,
-                "a2_1 = 45 [kg]");
+                "x1");
 
         // Inside P1_1 there is an import of S1::* so no need to use the qualified name
-        // Test using qualified name
+
         Runnable directEditInitialLabelCheck3 = this.directEditInitialLabelTester.checkDirectEditInitialLabelOnNode(diagram,
                 GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
                 "x1");
 
-        // Inside P1 there is no import so we need qualified name
-        Runnable directEditInsideLabelCheck3 = this.directEditTester.directEditInsideLabel(diagram,
-                GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
-                "a2_1 = 45 [kg]");
-        Consumer<Object> directEditInsideLabelDiagramCheck3 = assertRefreshedDiagramThat(newDiagram -> {
+        Runnable createExpression2 = this.createExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID,
+                GeneralViewItemAndAttributeProjectData.SemanticIds.P1_1_X1_ID,
+                "45 [kg]");
+        Consumer<Object> createExpressionLabelDiagramCheck2 = assertRefreshedDiagramThat(newDiagram -> {
             DiagramNavigator diagramNavigator = new DiagramNavigator(newDiagram);
             InsideLabel newLabel = diagramNavigator.nodeWithId(GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID).getNode().getInsideLabel();
-            assertThat(newLabel.getText()).isEqualTo("a2_1 = 45 [kg]");
+            assertThat(newLabel.getText()).isEqualTo("x1 = 45 [kg]");
         });
 
         Runnable directEditInitialLabelCheck4 = this.directEditInitialLabelTester.checkDirectEditInitialLabelOnNode(diagram,
                 GeneralViewItemAndAttributeProjectData.GraphicalIds.P1_1_X1_ID,
-                "a2_1 = 45 [kg]");
+                "x1");
 
         StepVerifier.create(flux)
                 .consumeNextWith(initialDiagramContentConsumer)
                 .then(directEditInitialLabelCheck1)
-                .then(directEditInsideLabelCheck1)
-                .consumeNextWith(directEditInsideLabelDiagramCheck1)
+                .then(createExpression)
+                .consumeNextWith(createExpressionDiagramCheck)
                 .then(directEditInitialLabelCheck2)
                 .then(directEditInitialLabelCheck3)
-                .then(directEditInsideLabelCheck3)
-                .consumeNextWith(directEditInsideLabelDiagramCheck3)
+                .then(createExpression2)
+                .consumeNextWith(createExpressionLabelDiagramCheck2)
                 .then(directEditInitialLabelCheck4)
                 .thenCancel()
                 .verify(Duration.ofSeconds(10));
@@ -309,33 +335,32 @@ public void payloadFeatureChainBindingEdge() {
         Consumer<Object> initialDiagramContentConsumer = assertRefreshedDiagramThat(diagram::set);
 
         // Create an edge using direct edit
-        Runnable directEditInsideLabelCheck1 = this.directEditTester.directEditInsideLabel(diagram,
-                GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID,
-                "in a2_1 = a1.a1_1");
+        Runnable createExpression = this.createExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID,
+                GeneralViewItemAndAttributeProjectData.SemanticIds.A2_1_ID,
+                "a1.a1_1");
         Consumer<Object> diagramCheck1 = this.buildEdgeChecker(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID, "in a2_1 = a1.a1_1",
                 GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_BORDERED_NODE_ID, GeneralViewItemAndAttributeProjectData.GraphicalIds.A1_1_BORDERED_NODE_ID);
 
         // Change the edge to a new target
-        Runnable directEditInsideLabelCheck2 = this.directEditTester.directEditInsideLabel(diagram,
-                GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID,
-                "in a2_1 = a1.a1_2");
+        Runnable editExpression1 = this.editExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID,
+                () -> GeneralViewItemAndAttributeProjectData.SemanticIds.A2_1_ID,
+                "a1.a1_2");
         Consumer<Object> diagramCheck2 = this.buildEdgeChecker(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID, "in a2_1 = a1.a1_2",
                 GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_BORDERED_NODE_ID, GeneralViewItemAndAttributeProjectData.GraphicalIds.A1_2_BORDERED_NODE_ID);
 
         // Remove edge
-        Runnable directEditInsideLabelCheck3 = this.directEditTester.directEditInsideLabel(diagram,
-                GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID,
-                "in a2_1 =");
+        Runnable deleteExpression = this.deleteExpression(GeneralViewItemAndAttributeProjectData.EDITING_CONTEXT_ID,
+                GeneralViewItemAndAttributeProjectData.SemanticIds.A2_1_ID);
         Consumer<Object> diagramCheck3 = this.buildNoEdgeStartingFromChecker(diagram, GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_ICON_AND_LABEL_ID, "in a2_1",
                 GeneralViewItemAndAttributeProjectData.GraphicalIds.A2_1_BORDERED_NODE_ID);
 
         StepVerifier.create(flux)
                 .consumeNextWith(initialDiagramContentConsumer)
-                .then(directEditInsideLabelCheck1)
+                .then(createExpression)
                 .consumeNextWith(diagramCheck1)
-                .then(directEditInsideLabelCheck2)
+                .then(editExpression1)
                 .consumeNextWith(diagramCheck2)
-                .then(directEditInsideLabelCheck3)
+                .then(deleteExpression)
                 .consumeNextWith(diagramCheck3)
                 .thenCancel()
                 .verify(Duration.ofSeconds(10));
@@ -405,4 +430,32 @@ private Consumer<Object> buildNoEdgeStartingFromChecker(AtomicReference<Diagram>
             assertThat(newEdges).hasSize(0);
         });
     }
+
+    private Runnable createExpression(String editingContextId, String parentElementId, String expressionContent) {
+        return () -> {
+            var input = new CreateExpressionInput(UUID.randomUUID(), editingContextId, parentElementId, expressionContent);
+            var result = this.createExpressionMutationRunner.run(input);
+            String typename = JsonPath.read(result.data(), "$.data.createExpression.__typename");
+            assertThat(typename).isEqualTo(CreateExpressionSuccessPayload.class.getSimpleName());
+        };
+    }
+
+    private Runnable editExpression(String editingContextId, Supplier<String> elementId, String expressionContent) {
+        return () -> {
+            var input = new EditExpressionInput(UUID.randomUUID(), editingContextId, elementId.get(), expressionContent);
+            var result = this.editExpressionMutationRunner.run(input);
+            String typename = JsonPath.read(result.data(), "$.data.editExpression.__typename");
+            assertThat(typename).isEqualTo(EditExpressionSuccessPayload.class.getSimpleName());
+        };
+    }
+
+    private Runnable deleteExpression(String editingContextId, String parentElementId) {
+        return () -> {
+            var input = new DeleteExpressionInput(UUID.randomUUID(), editingContextId, parentElementId);
+            var result = this.deleteExpressionMutationRunner.run(input);
+            String typename = JsonPath.read(result.data(), "$.data.deleteExpression.__typename");
+            assertThat(typename).isEqualTo(SuccessPayload.class.getSimpleName());
+        };
+    }
+
 }
diff --git a/backend/services/syson-diagram-services/src/main/java/org/eclipse/syson/diagram/services/DiagramMutationLabelService.java b/backend/services/syson-diagram-services/src/main/java/org/eclipse/syson/diagram/services/DiagramMutationLabelService.java
index 0eb22af12..8331e0418 100644
--- a/backend/services/syson-diagram-services/src/main/java/org/eclipse/syson/diagram/services/DiagramMutationLabelService.java
+++ b/backend/services/syson-diagram-services/src/main/java/org/eclipse/syson/diagram/services/DiagramMutationLabelService.java
@@ -139,7 +139,7 @@ public Element directEditNode(Element element, String newLabel) {
      * @return the given {@link Element}.
      */
     public Element directEditListItem(Element element, String newLabel) {
-        return this.directEdit(element, newLabel, true, (String[]) null);
+        return this.directEdit(element, newLabel, true, LabelService.VALUE_OFF);
     }
 
     public Element editMultiplicityRangeCenterLabel(Element element, String newLabel) {
diff --git a/backend/services/syson-diagram-services/src/main/java/org/eclipse/syson/diagram/services/DiagramQueryLabelService.java b/backend/services/syson-diagram-services/src/main/java/org/eclipse/syson/diagram/services/DiagramQueryLabelService.java
index 359571050..47a270612 100644
--- a/backend/services/syson-diagram-services/src/main/java/org/eclipse/syson/diagram/services/DiagramQueryLabelService.java
+++ b/backend/services/syson-diagram-services/src/main/java/org/eclipse/syson/diagram/services/DiagramQueryLabelService.java
@@ -360,7 +360,7 @@ private String getValueStringRepresentation(Usage usage, boolean directEditInput
                 .filter(FeatureValue.class::isInstance)
                 .map(FeatureValue.class::cast)
                 .findFirst();
-        if (featureValue.isPresent()) {
+        if (featureValue.isPresent() && !directEditInput) {
             var expression = featureValue.get().getValue();
             String valueAsString = null;
             if (expression != null) {
diff --git a/backend/services/syson-services/src/main/java/org/eclipse/syson/util/AQLUtils.java b/backend/services/syson-services/src/main/java/org/eclipse/syson/util/AQLUtils.java
index 7c950781d..b6c471880 100644
--- a/backend/services/syson-services/src/main/java/org/eclipse/syson/util/AQLUtils.java
+++ b/backend/services/syson-services/src/main/java/org/eclipse/syson/util/AQLUtils.java
@@ -33,91 +33,6 @@ public static String aqlString(String string) {
         return '\'' + string + '\'';
     }
 
-    /**
-     * Returns the AQL expression for calling a service without any parameter using <code>self</code> as the
-     * instance.<br>
-     * For instance: <code>aql:self.myService()</code>
-     *
-     * @param serviceName
-     *            The name of the service to call.
-     * @return An AQL expression (<code>String</code>) expressing the call of the given service.
-     */
-    public static String getSelfServiceCallExpression(String serviceName) {
-        return getSelfServiceCallExpression(serviceName, List.of());
-    }
-
-    /**
-     * Returns the AQL expression for calling a service with one parameter using <code>self</code> as the instance.<br>
-     * For instance: <code>aql:self.myService(sysml::Package)</code>
-     *
-     * @param serviceName
-     *            The name of the service to call.
-     * @param parameter
-     *            The unique parameter.
-     * @return An AQL expression (<code>String</code>) expressing the call of the given service.
-     */
-    public static String getSelfServiceCallExpression(String serviceName, String parameter) {
-        return getSelfServiceCallExpression(serviceName, List.of(parameter));
-    }
-
-    /**
-     * Returns the AQL expression for calling a service with several parameters using <code>self</code> as the
-     * instance.<br>
-     * For instance: <code>aql:self.myService(sysml::Package, newValue)</code>
-     *
-     * @param serviceName
-     *            The name of the service to call.
-     * @param parameters
-     *            The list of parameters.
-     * @return An AQL expression (<code>String</code>) expressing the call of the given service.
-     */
-    public static String getSelfServiceCallExpression(String serviceName, List<String> parameters) {
-        return AQLConstants.AQL_SELF + '.' + serviceName + '(' + String.join(",", parameters) + ')';
-    }
-
-    /**
-     * Returns the AQL expression for calling a service without any parameter.
-     *
-     * @param var
-     *            The part of the expression specifying the variable on which the service should be called.
-     * @param serviceName
-     *            The name of the service to call.
-     * @return An AQL expression (<code>String</code>) expressing the call of the given service.
-     */
-    public static String getServiceCallExpression(String var, String serviceName) {
-        return AQLUtils.getServiceCallExpression(var, serviceName, List.of());
-    }
-
-    /**
-     * Returns the AQL expression for calling a service with one parameter.
-     *
-     * @param var
-     *            The part of the expression specifying the variable on which the service should be called.
-     * @param serviceName
-     *            The name of the service to call.
-     * @param parameter
-     *            The unique parameter.
-     * @return An AQL expression (<code>String</code>) expressing the call of the given service.
-     */
-    public static String getServiceCallExpression(String var, String serviceName, String parameter) {
-        return AQLUtils.getServiceCallExpression(var, serviceName, List.of(parameter));
-    }
-
-    /**
-     * Returns the AQL expression for calling a service with several parameters.
-     *
-     * @param var
-     *            The part of the expression specifying the variable on which the service should be called.
-     * @param serviceName
-     *            The name of the service to call.
-     * @param parameters
-     *            The list of parameters.
-     * @return An AQL expression (<code>String</code>) expressing the call of the given service.
-     */
-    public static String getServiceCallExpression(String var, String serviceName, List<String> parameters) {
-        return AQLConstants.AQL + var + '.' + serviceName + '(' + String.join(",", parameters) + ')';
-    }
-
     /**
      * Returns an AQL sequence from the given members.
      *
diff --git a/backend/services/syson-services/src/main/java/org/eclipse/syson/util/SysONEcoreUtil.java b/backend/services/syson-services/src/main/java/org/eclipse/syson/util/SysONEcoreUtil.java
index 4a07ae587..a45782004 100644
--- a/backend/services/syson-services/src/main/java/org/eclipse/syson/util/SysONEcoreUtil.java
+++ b/backend/services/syson-services/src/main/java/org/eclipse/syson/util/SysONEcoreUtil.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -14,7 +14,6 @@
 
 import java.util.Collection;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
@@ -24,7 +23,6 @@
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.emf.ecore.InternalEObject;
 import org.eclipse.emf.ecore.util.EcoreUtil;
-import org.eclipse.emf.ecore.util.FeatureMapUtil;
 
 /**
  * SysON specialization of {@link EcoreUtil} class coming from org.eclipse.emf.ecore. The specialization allows to have
@@ -93,24 +91,4 @@ public static void deleteAll(Collection<? extends EObject> eObjects, boolean rec
             EcoreUtil.remove(crossResourceEObject.eContainer(), crossResourceEObject.eContainmentFeature(), crossResourceEObject);
         }
     }
-
-    /**
-     * Removes the values from the setting.
-     *
-     * @param setting
-     *            the setting holding the value.
-     * @param values
-     *            the values to remove.
-     */
-    public static void removeAll(EStructuralFeature.Setting setting, Collection<?> values) {
-        EStructuralFeature eStructuralFeature = setting.getEStructuralFeature();
-        if (eStructuralFeature != null && !eStructuralFeature.isDerived()) {
-            if (FeatureMapUtil.isMany(setting.getEObject(), eStructuralFeature)) {
-                ((List<?>) setting.get(false)).removeAll(values);
-            } else {
-                // The feature is assumed to hold the value.
-                setting.unset();
-            }
-        }
-    }
 }
diff --git a/doc/content/modules/user-manual/pages/hands-on/how-tos/model-management.adoc b/doc/content/modules/user-manual/pages/hands-on/how-tos/model-management.adoc
index f8fb1ea40..e3146a5e7 100644
--- a/doc/content/modules/user-manual/pages/hands-on/how-tos/model-management.adoc
+++ b/doc/content/modules/user-manual/pages/hands-on/how-tos/model-management.adoc
@@ -303,9 +303,6 @@ If _SomeTypeName_ doesn't exist, it's created as an appropriate type element (fo
 * Typing `someElement:>otherElement` on a element sets _someElement_ as a `Subsetting` of the _otherElement_ if both element are of the same type.
 Otherwise, it creates a `specialization` relationship between _someElement_ and _otherElement_.
 * Typing `someElement:>>otherElement` on an element sets _someElement_ as a `redefinition` of _otherElement_.
-* On a `Feature`, typing `= someExpression` sets a bounded value to the feature (at the moment only `LiteralExpression` are handled in the expression part).
-* On a `Feature`, typing  `:= someExpression` sets an initial value to the feature (at the moment only `LiteralExpression` are handled in the expression part).
-* On a `Feature`, typing  the symbol `default` before the symbols `=` or `:=` makes the bounded or initial value "default" (to be opposed as "fixed" if the symbol is not present).
 
 These shortcuts offer a convenient way to update model elements efficiently.
 
diff --git a/doc/content/modules/user-manual/pages/hands-on/tutorials/flashlight.adoc b/doc/content/modules/user-manual/pages/hands-on/tutorials/flashlight.adoc
index b1754803c..7cab41eb3 100644
--- a/doc/content/modules/user-manual/pages/hands-on/tutorials/flashlight.adoc
+++ b/doc/content/modules/user-manual/pages/hands-on/tutorials/flashlight.adoc
@@ -72,7 +72,10 @@ Then select `SI/Library Package SI` to import it from the standard libraries.
 This will allow you to use standard units, such as the kilogram.
 . Click on the `Manage Visibility -> require constraints` (i.e. the eye icon that will appear when the mouse pointer will be over the `weight` requirement) on the `weight` requirement to display the _require constraints_ compartment on the `weight` requirement.
 . Use the palette filter to locate the `New Required Constraint` tool, and apply it to the `weight` requirement.
-. In the `require constraints` compartment of the `weight` requirement, edit the constraint to: `actualweight \<= 0.25 [kg]`
+. In the dialog that opens, choose the `Create a New Require Constraint` option and then `Confirm`.
+. In the `require constraints` compartment of the `weight` requirement, select the newly created constraint.
+. Open it's palette, and invoke the `New Expression` tool in the `Expression` section.
+. In the modal that opens, enter `actualweight \<= 0.25 [kg]` and click on the `Update` button.
 This will set the predicate of the constraint.
 
 image::flashlight-requirements-tree.png[Flashlight Requirements Tree]
@@ -117,12 +120,16 @@ action directLight{
 ----
 . In the `action flow` compartment of `produceDirectLight` use the tool `Related Elements -> Add existing element`.
 . Create a new transition between `fork1` and `connectDCPwr`.
-. Set the value of `connectDCPwr::onOffCmd` by editing the item `in onOffCmd` of `connectDCPwr` to `in onOffCmd = produceDirectedLight.onOffCmd`. Do that in the _items_ compartment of the `connectDCPwr` action in the diagram.
+. In the _items_ compartment of the `connectDCPwr` action in the diagram, select the item `onOffCmd` and invoke the `New Expression` tool on it.
+. In the expression dialog, enter `produceDirectedLight.onOffCmd` and click on `Update`.
+. The `in connectDCPwr` item now shows as `in connectDCPwr = produceDirectedLight.onOffCmd` and an edge has appeared to show the binding.
 . Create a `Flow Connection (flow)` from `dcPwrOut` of `connectDCPwr` to  `dcPwrIn` of `generateLight`.
 . Create a `Flow Connection (flow)` between `light` of `generateLight` to `lightIn` of `directLight`.
 . Create a `Flow Connection (flow)` between `outdcPwr` of `provideDCPwr` to `dcPwrIn` of `connectDCPwr`.
 . Use the eye icon on the `produceDirectLight` action to display the `items` compartment.
-. Set the value of `produceDirectedLight::lightOut` by renaming the item `out lightOut` of `produceDirectedLight` to `out lightOut = directLight.lightOut`.
+. In the _items_ compartment of the `produceDirectedLight` action in the diagram, select the item `out lightOut` and invoke the `New Expression` tool on it.
+. In the expression dialog, enter `directLight.lightOut` and click on `Update`.
+. The `out lightOut` item now shows as `out lightOut = directLight.lightOut` and an edge has appeared to show the binding.
 
 image::flashlight-action-tree.png[Flashlight Requirements Tree]
 
diff --git a/doc/content/modules/user-manual/pages/release-notes/2026.7.0.adoc b/doc/content/modules/user-manual/pages/release-notes/2026.7.0.adoc
index e4fb2aa55..52f96f0fa 100644
--- a/doc/content/modules/user-manual/pages/release-notes/2026.7.0.adoc
+++ b/doc/content/modules/user-manual/pages/release-notes/2026.7.0.adoc
@@ -43,6 +43,9 @@ image::release-notes-assume-and-require-edges.png[assume and require edge betwee
 +
 image::release-notes-assume-and-require-edge-tools.png[list available edge tools containing the two new tools, between a RequirementUsage and a ConstraintUsage, width=60%,height=60%]
 
+** When using direct edit on feature elements which have a value expression (e.g. an `Attribute` with a default value defined), the expression part (after the `=` sign) is no longer part of the initial direct edit value, and will be ignored if supplied in the new text value.
+Users should use the dedicated tools to edit expressions instead, as they ensure only valid expressions (with all names resolving) are accepted.
+
 * In the _Explorer_ view:
 
 ** The tree items corresponding to the internals of `Expression` elements (syntax tree) are now hidden by default.
diff --git a/scripts/check-coverage.jsh b/scripts/check-coverage.jsh
index 564f813ca..3d900cf78 100755
--- a/scripts/check-coverage.jsh
+++ b/scripts/check-coverage.jsh
@@ -36,7 +36,7 @@ var moduleCoverageData = List.of(
   new ModuleCoverage("syson-common-view", 100.0),
   new ModuleCoverage("syson-diagram-common-view", 89.0),
   new ModuleCoverage("syson-diagram-services", 85.0),
-  new ModuleCoverage("syson-direct-edit-grammar", 67.0),
+  new ModuleCoverage("syson-direct-edit-grammar", 66.0),
   new ModuleCoverage("syson-form-services", 100.0),
   new ModuleCoverage("syson-model-services", 95.0),
   new ModuleCoverage("syson-representation-services", 100.0),