hello, maybe this is a too simple question, but I don't know what to do anymore. I have a Zclass called "Dokument" and I have an Instance called "Dok" in a folder. In the same folder, there is a DTML-Document, from where I call an external python-method. The Zclass has the properties "author" and "version". What I want, is to change the properties of the Instance "Dok" with the python-method. I want to do it with the following code: self = getattr(self, "Dok") self.manage_changeProperties(Author = 'Bill Gates', Version = '400th beta') The method has no error, that is, it does not crash, when it is called. But the properties are not changed... and I am going mad, slowly but surely! Does anybody have a idea, what went wrong???? Thank you very much. Markus