Hi, Apparently my knowledge of Zope/Python is still to limited. I have a product that derives from Folder. When I add this product to a folder via zmi I want to have it populated with other products to it programmatically. I tried to do so in the __init__ function. That works with objects like acl_user folders, but not with products in the products directory. Can anyone send me in the right direction or at least give a hint where to look for a solution? With trial and error I came thus far (stripped down to the basics): Module QuerySet.py: from Query import manage_addQuery class QuerySet(Folder): def __init__(self, id, title): self.id = id self.title = title self.manage_addUserFolder() manage_addQuery(self, id, title) manage_addQuery in Query.py looks like: def manage_addQuery(dispatcher, id, title, REQUEST=None): "...." nQ=Query(id,title) dispatcher.Destination()._setObject(id, nQ) if REQUEST is not None: dispatcher.manage_main(dispatcher, REQUEST) Traceback (innermost last): Module ZPublisher.Publish, line 101, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 39, in call_object Module Products.QuerySet.QuerySet, line 80, in manage_addQuerySet Module Products.QuerySet.QuerySet, line 107, in __init__ Module Products.Query.Query, line 80, in manage_addQuery AttributeError: Destination zope 2.7.8, win32 tia, cb