Hi, I've created a new product (for Zope-2.6), which inherit from BTreeFolder as well as another custom product (not a container) of my own. When I try to add a new item in my folder, I receive an error message. For example, class MyBTreeFolder (BTreeFolder): def __init__ (self, id, title=None, REQUEST=None): "" self.id = id self.title = title folder = Folder (id='archives') set._setObject (folder.id, folder) ... At runtime, I receive the following error : Traceback (innermost last): * Module ZPublisher.Publish, line 98, in publish * Module ZPublisher.mapply, line 88, in mapply * Module ZPublisher.Publish, line 39, in call_object * Module Products.Intraforet.MyBTreeFolder, line 428, in manage_addMyBTreeFolder * Module Products.Intraforet.MyBTreeFolder, line 138, in __init__ * Module OFS.ObjectManager, line 256, in _setObject * Module Products.BTreeFolder.BTreeFolder, line 187, in _setOb TypeError: object does not support item assignment What does this meen ?? Thanks for any help... Thierry P.S.: I've created other products inheriting from ObjectManager instead of BTreeFolder, without any problem... -- Linux every day, keeps Dr Watson away... http://gpc.sourceforge.net -- http://www.ulthar.net