http://www.zope.org/Members/anthony/tree-coding-tricks "How-To: Some Neat Tricks with dtml-tree" seems to imply that I can use trees on things other than ZODB objects. But I've been banging my head against the wall on this for some time, and I can't figure it out. Here's what I've got: An index_html document: <dtml-var standard_html_header> <dtml-call "REQUEST.set('eid', '1000')"> <dtml-tree id=eid branches_expr="GetEmployees(eid=eid)"> <dtml-var eid> </dtml-tree> <dtml-var standard_html_footer> A DTML Method called GetEmployees that returns test data: <dtml-if "eid == '1000'"> <dtml-return "[1001, 1010]"> </dtml-if> <dtml-if "eid == '1001'"> <dtml-return "[1002, 1003]"> </dtml-if> <dtml-if "eid == '1010'"> <dtml-return "[1011, 1012]"> </dtml-if> <dtml-return "[]"> What I get is an infinitely expanding tree of two pairs of 1000's: - 1000 + 1000 - 1000 + 1000 - 1000 + 1000 + 1000 + 1000 What I don't understand is how the stuff from branches_expr is supposed to change things around. And, not coincidentally, that seems to be the problem with this code.... Thanks for any help.