Or put another way! how-to: make the Value of a zClass multiple-selection Type property call the ID's of other zClasses in a Folder. i searched the boards and zope.org, but couldnt find references to using multiple-selection in zClasses. specifically: What is the syntax for the Value of a multiple-selection Type? -to build from the instances of a different zClass The DTML below generates the list I need, but what is the syntax that makes sense to Value in zClasses? is this DTML generating the right type of list? ###the_list DTMLMethod <dtml-with folder_of_anotherZClasses> <dtml-in expr="objectValues('anotherZClass')"> <dtml-var "id"> </dtml-in> </dtml-with> When I instantiate myzClass, one of the myzClass properties is a multiple-selection list of all the instances of 'anotherZClass', in a specified folder. I want the 'id' because a method of myzClass is to create hotlinks to related 'anotherZClass'. Thanks again for the support, -Trevor