Hi Zopists, I have created a ZClass (TestClass) with an external python function 'foo'. Now I would like to create an instance (myTest) of my TestClass in a dtml template and call its method foo. When I put the code below <dtml-let myTest="_['Control_Panel']['Products']['TestProduct']['TestClass']"> <dtml-var "myTest.foo()"> </dtml-let> I can see this error: Error Type: AttributeError Error Value: __call__ When I looked at the returned type of myTest.foo, the Zope says that it is an instance of Folder. Can anybody help me how to call create instances of ZClasses programatically only in the name-space (not in ZODB) and call their functions? Petr -- Petr Knápek NEXTRA Czech Republic, s.r.o., Veveří 102, 659 10 Brno, Czech Republic e-mail: mailto:petr.knapek@nextra.cz tel:+420-5-41 558 394 FAX:+420-5-41 558 390