[Zope] Passing paramaters for form processing

[steve smith]

How do I set some parameters for use in a form processing method? I have a
HTML "FORM" tag referencing a DTML method name, and I want that method to
have visibilty of some variables from the calling methods space. I've tried
passing them with the url (eg, "ACTION=/someurl?fred=<dtml-var blah>") and
by using REQUEST.set syntax in the calling method. Neither seems to result
in the variable being visible to the form processing method. Any ideas?

Steve