I've hit the documentation, and looked at several examples, but I haven't found what is needed. The following code is an attempt to have a tree tag show the Folders and DTML Documents. However, I want to put a hyperlink only to the DTML Documents (not the Folders). Note, this code does not work... <P ALIGN="left"><STRONG>Categories and Clauses:</STRONG> (<A HREF="<dtml-var URL0>?expand_all=1">expand all</A>, <A HREF="<dtml-var URL0>?collapse_all=1">collapse all</A>) <dtml-tree branches_expr="objectValues(['Folder', 'DTML Document'])" sort=title skip_unauthorized> <dtml-if expr="sequence-item == objectValues('Folder')"> <IMG SRC="<dtml-var SCRIPT_NAME>/<dtml-var icon>"> <dtml-var title> <dtml-if expr="sequence-item == objectValues('DTML Document')"> <IMG SRC="<dtml-var SCRIPT_NAME>/<dtml-var icon>"> <A HREF="&absoulte_url;"><dtml-var title></A> </dtml-if> </dtml-tree> </P> Zope is complaining about the user of "sequence". Is there a way to check to see what type of object it is so that the hyperlink is enabled only for certain object types? TIA, Ron