[Zope] Arrggh, more namespace confusion ...

I'm on the tail-end of another 48-hour Zoping marathon but just when I can see the proverbial light - click(). Arggh. I've pared my current problem down to: root spam (DTML method) folder1 folder2 where spam contains: <dtml-var "REQUEST.set('mylist', ['folder1','folder2'])"> <dtml-in mylist> <dtml-with sequence-item><dtml-var id></dtml-with> </dtml-in> My aim is to loop over mylist pushing sequence-item onto the namespace stack, ie, <dtml-with folder1><dtml-var id></dtml-with> <dtml-with folder2><dtml-var id></dtml-with> I've toyed with every version of the <dtml-with> tag I can imagine but to no avail. Can someone please explain the source of my confusion. Cheers, Darran.