Hi, First , thanks for everyone's help with my last two queries which solved the questions I had perfectly - I hope you can bear with me for one more... I am now trying to create a simple product which clones a tinytableplus. I have set it up similarly to the zoo exhibit example in the Zope book. apart from the stuff to redirect back, the add script includes only newgrid=context.manage_clone(container[source],id) where 'source' is a parameter passed from an 'add form' to determine which of several tinytables to use (these are in the product folder). This works if I try to add the product to the product folder itself by viewing and submitting the add form that calls the script but when I try to use the normal add product drop down list I get this error: Error Type: AttributeError Error Value: __getitem__ Everything works OK if I substitute the actual name of a tinytable (preceded by .) like this. newgrid=context.manage_clone(container.grid,id) I'd be very grateful for any ideas, thanks , John -- J o h n G r e y http://j-grey-pc.sunderland.ac.uk ---------------------------------