Hello, I am trying to use the multiple selection type attributs in a Zclass object definition. I want to use a method who return a list and accept arguments. The method is sutauted in a subfolder of my main site but not in the definition of the Zclass Object. By example : mainsite ---Family----Object | --parameter---method The method in parameter return a python list. The attribut type multiple selection is in the Object definition 1) I want to know the syntax in the attribut value part i must put to obtain a result different from no value for xxx I try : methods (doesn't work) parameter.method (id) parameter/method (id) /mainsite/parameter/method mainsite.parameter.method no solution are working !! 2) in reality, i want to complicate the problem, and i want to use a method in a other type of object (called Critera) which return the list of values. In thsi case in parametre, i will have a list of Critera Object. In that case which is the syntax? is it possible ? 3) has someone an idea how we can dump the contents of the context, namespace and request of an object (attribut, etc) because this point seems reaaly difficult to understand in zope. Thanks for your help Best regards Dominique