Hi Zope-sters, Can anyone tell me how to store a list in a property in a property_sheet in a zclass instance? What I want is to have a property (lets say its called grades). So I can <dtml-with student> <dtml-in grades> Homework: <dtml-var sequence-item> </dtml-in> </dtml-with> Which should loop through the grades list and print them out. The thing is: I can't figure out what kind of property to use. If I use a string and stick 23, 45, 67 in it then I get an error that you can't use strings with an dtml-in. I tried using "token" and "lines"(I'm not actually sure what these are). This worked but I was unable to math with the entries. I get the error: number coercion failed When I try to do something like this: <dtml-let value=sequence-item> <dtml-call "REQUEST.set('total',total+value)"> Any hints? -Chris Walter walter@budoe.bu.edu