Zopistas: Does Zope allos an external method to modify a dictionary object that is passed to the external method via the REQUEST object. I am working with the object: items_list = [{'element1':'element1value', 'element2':'element2value','element3': element3value},{....},....] I am getting trouble with with this as any time I try to modify any dictionary from items_list, items_list[n] I do get an error similar to: line 120, in agregaItemDicts def agregaItemLista2(self,item,REQUEST): File "/usr/local/Zope-2.7.4/lib/python/ZPublisher/HTTPRequest.py", line 1502, in __getattr__ raise AttributeError, key AttributeError: __setitem__ It looks like the dictionary is behaving as if it not were a mutable object (as it is in Python), I have no trouble modifying the list 'items_list' itself. i have read a bit about dictionaries persistence and calling _p_changed=1 bu have not had any luck so far. I am using an external method, not a product. Any ideas would be appreciated.. Best regards.