[Zope] Create my own edit form

[Breitenreicher, Marc]

Hi community,

I'm trying to build my own edit form for DTML-Documents.
Therefore I need to get the unrendered data of a document to print out in a
textarea-box.

How can I do that?

I tried something like
  <textarea name="data:string" cols="50" rows="10">
   <dtml-var "_[mydocument]">
   </textarea>

The variable 'mydocument' is the document I want to edit.
But this returns the rendered dtml-code, only html-tag stay as they were.

Who can help me?
Thanks in advance

Marc