[Zope] Strange behavior in folderish class

Howdy - I have a python product, with a simple class MyClass derived from Folder. It has a simple method myMethod with the following code: def myMethod(self): return self.id I have several nested instances of myClass on my site, but here is a simplest case: myClassInstanceA | |__myClassInstanceB I also have a simple template (zpt), with the following code: <span tal:content="here/myMethod"/> Here is the problem: when I go to http://mysite/myClassInstanceA/myClassInstaceB, the output of my zpt is always 'myClassInstanceA', where I would expect it to be 'myClassInstanceB'. What am I missing? Do I need to do more than just inherit from Folder class? Do I need anything special in my __init__ method? Thanks, Daniel.