>If you store an expression in a property that uses THIS, that reference points to the class object, eg. =MyFunc(This). If you store this reference and later change its properties, you are indeed changing the class. Subsequent calls to CREATEOBJECT() will reduce different instances. I agree that the language isn't supposed to show this behavior.

could you show some code ? I get a subscript error on my interpretation of what you describe...

thx

thomas