I am using the Formulator product. http://www.zope.org/Members/faassen I unable to cause a TALES expression to contact a pyscript located outside the form's container. --main_folder---formObject project | folder---- | --alt_folder---pyScript I have a List Field whose items I would like to populate using a TALES expression. The TALES expression calls a python script that returns a list of 2 item tuples (as described in the formulator help) When I try to use the test tab, the tales expression fails. I have tried various renditions of the container attribute but always get the error. . . exceptions.AttributeError on container in '' container/alt_folder/pyscript !error! python:container.alt_folder.pyscript() !error! These types of expressions work from a ZPT sitting next to the form in the main_folder. So I am obviously confused about the namespace available from within formulator. Could someone clue me in to traversing zope namespace from within the formulator TALES expression? Many Thanks