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diff --git a/bundles/org.simantics.structural2/src/org/simantics/structural2/variables/StandardProdeduralPropertyVariable.java b/bundles/org.simantics.structural2/src/org/simantics/structural2/variables/StandardProdeduralPropertyVariable.java
new file mode 100644
index 000000000..a277f5142
--- /dev/null
+++ b/bundles/org.simantics.structural2/src/org/simantics/structural2/variables/StandardProdeduralPropertyVariable.java
@@ -0,0 +1,71 @@
+package org.simantics.structural2.variables;
+
+import org.simantics.databoard.Bindings;
+import org.simantics.databoard.adapter.AdaptException;
+import org.simantics.databoard.binding.Binding;
+import org.simantics.databoard.type.Datatype;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.variable.StandardAssertedGraphPropertyVariable;
+import org.simantics.db.layer0.variable.ValueAccessor;
+import org.simantics.db.layer0.variable.Variable;
+
+public class StandardProdeduralPropertyVariable extends StandardAssertedGraphPropertyVariable {
+
+	private Object defaultValue;
+
+	public StandardProdeduralPropertyVariable(ReadGraph graph,
+			StandardProceduralChildVariable parent,
+			StandardAssertedGraphPropertyVariable assertedVariable, Object value) throws DatabaseException {
+		super(graph, parent, assertedVariable.node, assertedVariable.parentResource, assertedVariable.property.predicate, assertedVariable.object);
+		
+		this.defaultValue = value;
+	}
+	
+	@Override
+	protected ValueAccessor getValueAccessor(ReadGraph graph) throws DatabaseException {
+		final ValueAccessor valueAccessor = super.getValueAccessor(graph);
+		return new ValueAccessor() {
+			@Override
+			public void setValue(WriteGraph graph, Variable context, Object value, Binding binding) throws DatabaseException {
+				valueAccessor.setValue(graph, context, value, binding);
+			}
+			
+			@Override
+			public void setValue(WriteGraph graph, Variable context, Object value) throws DatabaseException {
+				valueAccessor.setValue(graph, context, value);
+			}
+			
+			@Override
+			public Object getValue(ReadGraph graph, Variable context, Binding binding) throws DatabaseException {
+				if (node != null) {
+					return valueAccessor.getValue(graph, context, binding);
+				} else {
+					if (binding.isInstance(defaultValue))
+						return defaultValue;
+					else
+						try {
+							return Bindings.adapt(defaultValue, Bindings.OBJECT, binding);
+						} catch (AdaptException e) {
+							throw new DatabaseException("Failed to adapt object " + defaultValue + " to " + binding);
+						}
+				}
+			}
+			
+			@Override
+			public Object getValue(ReadGraph graph, Variable context) throws DatabaseException {
+				if (node != null) {
+					return valueAccessor.getValue(graph, context);
+				} else {
+					return defaultValue;
+				}
+			}
+			
+			@Override
+			public Datatype getDatatype(ReadGraph graph, Variable context) throws DatabaseException {
+				return valueAccessor.getDatatype(graph, context);
+			}
+		};
+	}
+}