[Zope] Is there an easy way?..

I have a form that has 12 checkboxes on it. On the action URL, I have an in tag, which iterates over the ?list? of checkboxes. Problem is, when one or none are checked, zope complains about the stuff being a string, and refuses to do anything. Quick fix please? -Thanks in advance. -- ------------------------------------------------------------ "One World, One Web, One Program" - Microsoft Promotional Ad "Ein Volk, Ein Reich, Ein Fuhrer" - Adolf Hitler ------------------------------------------------------------