--- a/dialogs/FBDVariableDialog.py	Mon Dec 14 11:00:56 2009 +0100
+++ b/dialogs/FBDVariableDialog.py	Tue Dec 15 08:53:29 2009 +0100
@@ -211,7 +211,7 @@
             self.Expression.Enable(False)
         else:
             self.VariableName.SetStringSelection("")
-            self.Expression.Enable(var_class == INPUT)
+            #self.Expression.Enable(var_class == INPUT)
         self.VariableName.Enable(self.VariableName.GetCount() > 0)
             
     def SetMinVariableSize(self, size):