[Zope] NewBeZenner Question - recursive methods continued

[Roché Compaan]

I have a recursive method that renders the site navigation, called from
standard_html_header:

<!--#in "objectValues(['Folder', 'DTML Document'])"-->
  <!--#if "meta_type == 'Folder'"-->
  <tr><td>
    <!--#if expr="id <> 'REQUEST.pageid'"-->
      <!--#var FolderClosed--><a href="<!--#var absolute_url-->"><!--#var
title_or_id--></a>
    <!--#else-->
      <!--#var FolderOpen--><!--#var title_or_id--></a>
    <!--#/if-->
  </td></tr>
  <!--#var navigation-->
  <!--#/if-->
<!--#/in-->

In the standard_html_header I declare a new variable:
<!--#call REQUEST.set('pageid',id)-->

I then compare <!--#if expr="id <> 'REQUEST.pageid'"--> to determine what
Folder Image should be rendered and if a hyperlink should be created.  I
tried to simply display the pageid variable to determine it's value:
<!--#var expr="_[pageid]"--> ,
but it produced an error

This does not work.  What todo?

Roché