[Zope] tales expressions issue

[David Bear]

I have a formulator form with 12 form objects -- some text boxes, some check boxes, etc.  There are 3 multicheckbox objects that want to populate with objects from a folder object.  Ergo, I have a multicheckbox objects called department, population, and institution.  I also have folder objects by the SAME name at the same level in the zope heirarchy as the formulator form.  I have a python script called listTitles also.

Now the strange thing happens when I use a python expression in to populate each of the above mention checkbox fields.  I use "python:form.department.listTitles()" to populatre the department formulator object.  It works.  I use "python:form.population()" to populate the populatio formulator object -- it does NOT work.  Same thing for institution.  

I'm begining to wonder if I can only have one expression on a formulator form.  Any idea's what might be happening?  I can put in the url "http://server/test/department/listTitles" and I get back a python list of objects in the department folder.  Which is what I expect.  (so I know acquisition is working as I think it should)
-- 
David Bear
College of Public Programs/ASU
Mail Code 0803