[Zope] Adding a ZClass Instance to a Specific Folder

The default constructor when a ZClass is created calls: <dtml-with "ZClass_name.createObjectInFolder(REQUEST['id'],REQUEST)"> </dtml-with> And when you programmatically add a ZClass instance, it's like this: <dtml-with "manage_addProducts('Your_product')"> <dtml-call "ZClass_name.ZClass_name_add(_.None,_)"> </dtml-with> This creates the instance in the directory of the method from which the call was made. The Question: How do you go about adding an instance to a specific folder? I can't, for the life of me, figure it out. I've tried many different things, and I've looked for flags in createObjectInFolder, but to no avail.