Hello, a DTML-Method should iterate through a list which a python-script called "attributeDecider" is returning <dtml-in "attributeDecider(attribute)"> <dtml-var id> </dtml-in> this is the python-script: objects = context.objectValues('Folder') liste = [] for object in objects: if hasattr(object,attribute) and object.attribute: liste.append(object) return liste -->attribute is a boolean attribute and everything works fine except that "attribute" is false --> Zope is not rendering an empty page but it's trying to download the page when I click on "view" in the ZMI When I change <dtml-in "attributeDecider(attribute)"> to <dtml- var "attributeDecider"> Zope shows an empty list-symbol (like expected). Thanks for your patience for this end-of-year-problem and Happy New Year!!