[Zope] hidden list

Once again, mind block: I would like to pass through a list called roles (built from a previous screen list box). I tried this: <input type='hidden' name='roles:list' value='<!--#var roles-->'> but the result is: ['['] It should be: ['resale', 'salesRep'] I verified that the variable "roles" actually contains ['resale', 'salesRep'] by displaying: <dtml-var roles> Any thoughts as to what I'm missing????? DR