sorry for spamming the list with loser questions but this one has had me stumped for hours and I am not even sure what to look for anymore: <dtml-call "z958063364.manage_changeProperties({'children' : 90})"> this line is in a dtml method in a folder with a lot of instances of a class. one instance is: z958063364 the class has a property sheet with a property called children I want to change its value. Eventually I want to have it dynamically fill in the gaps so that it will calll any particular instance with something like this: <dtml-call "_['parent_id'].manage_changeProperties({'children' : gchildren+12})"> but as it doesn't even work hard coded yet, I can't test that! thanks again, and I hope I can repay the debt if I ever get my head round zope! josh oN