[Zope] dynamic function binding problem in python product

Hello I don't know if i'm on the right way, maybe there is a totally different way to achieve this. I want to call a function (manage_propertiesForm) with a specific argument but if i put an argument into the action key of a manage_options item it doesnt appear in the management tabs i don't know why ?? I want to create the manage_options on the fly and pass arguments to the same dtml file so i tried to do it with this line: manage_conForm=(lambda cat="contact" : manage_propertiesForm(category=cat)) then I get a "missing doc string" error because every function needs a docstring ... so my question: is there another way to create a function which calls another function with a specific argument ? maybe with exec ? but i