[Zope] syntax problem

I have several DTML-Methods that simply hold page Fragments. In my main DTML Document I want to include one of these Methods via the <dtml-var> tag. If I use the method's name it works, the HTML source is included in the document and displayed correctly. But unfortunately, the method's id is stored in a variable (pagename). if I put <dtml-var pagename> or <dtml-var "pagename"> only the the method's id is displayed, not the contents/results of the method call. I've tried all combinations that came to my mind, but none worked. How can I solve this? -- Heiko Stoermer MIG Augsburg