[Zope] AttributeError

Hi , I have some problems wityh Zope. When I use : <dtml-with filetti> <dtml-var someobject> </dtml-with> I received the Zope error: ############## ... ... File /usr/lib/zope/lib/python/DocumentTemplate/DT_With.py, line 132, in render (Object: filetti) AttributeError: __call__ ############## "filetti" is a folder at the top folder ( /) If I copy filetti in the "current" folder , will work but is not what I want ( more than one objects are using this) If I use: <dtml-with "PARENTS[-1]"> <dtml-with filetti> ... </dtml-with> </dtml-with> I get the error, too. Has someone any idea? Marcel