Lars,
FWIW, I pasted your code into a DTML method in my Zope root and it worked
for me.
-Eric
> <dtml-var standard_html_header>
> <h2><dtml-var title_or_id></h2>
> <p>
> Hello
> <dtml-in expr="objectValues('Folder')">
> Out there !
> <dtml-var sequence-length>
> <dtml-var getId>
>
> </dtml-in>
> </p>
> <dtml-var standard_html_footer>