diff --git a/.gitignore b/.gitignore
index 684a2c2..363088a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,4 @@
 /screenshots
 /startup
 /www
+/.idea
diff --git a/addons/bl_datasmith/export_material.py b/addons/bl_datasmith/export_material.py
index e0905a1..b022c00 100644
--- a/addons/bl_datasmith/export_material.py
+++ b/addons/bl_datasmith/export_material.py
@@ -1169,7 +1169,7 @@ def exp_uvmap(socket, exp_list):
 	m = material_owner.data
 	if type(m) is bpy.types.Mesh:
 		for idx, uv in enumerate(m.uv_layers):
-			if uv.name == id:
+			if uv.name == socket.node.uv_map:
 				uv_index = idx
 	return exp_texcoord(exp_list, uv_index)
 
@@ -2454,6 +2454,8 @@ def exp_math(socket, exp_list):
 	"MULTIPLY",
 	"DIVIDE",
 	"ABSOLUTE",
+	"POWER",
+	"SIGN",
 	"MINIMUM",
 	"MAXIMUM",
 	"FLOOR",
@@ -2473,6 +2475,9 @@ def exp_math(socket, exp_list):
 	"FRACTION": (1, "Frac"),
 }
 VECT_MATH_FUNCTIONS = {  # tuples are (input_count, path)
+	"MULTIPLY_ADD": (3, "/DatasmithBlenderContent/MaterialFunctions/VectMultiplyAdd"),
+	"REFRACT": (3, "/DatasmithBlenderContent/MaterialFunctions/VectRefract"),
+	"FACEFORWARD": (3, "/DatasmithBlenderContent/MaterialFunctions/VectFaceforward"),
 	"WRAP": (3, "/DatasmithBlenderContent/MaterialFunctions/VectWrap"),
 	"SNAP": (2, "/DatasmithBlenderContent/MaterialFunctions/VectSnap"),
 	"PROJECT": (2, "/DatasmithBlenderContent/MaterialFunctions/VectProject"),
diff --git a/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectFaceforward.uasset b/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectFaceforward.uasset
new file mode 100644
index 0000000..39ab9c5
Binary files /dev/null and b/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectFaceforward.uasset differ
diff --git a/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectMultiplyAdd.uasset b/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectMultiplyAdd.uasset
new file mode 100644
index 0000000..4b8a1a7
Binary files /dev/null and b/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectMultiplyAdd.uasset differ
diff --git a/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectRefract.uasset b/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectRefract.uasset
new file mode 100644
index 0000000..b7a2504
Binary files /dev/null and b/ue_template/Plugins/DatasmithBlenderContent/Content/MaterialFunctions/VectRefract.uasset differ