Change a workflow document

[Werner Kößl]

Hi workflow experts,
 
when i use step 'create document from template' i get the workflow document
WF_Document_0001.
When i want to change this document i use a step with method 'Edit' from
object type 'WF_DOC'.
 
But what if i have a user decision and i also want to change the document
within this step.
I can attach the document to the workflow and so i can only open the
document through the link in the attachment list of the workitem.
But then the document is only displayed!
 
Does anybody know how i can change the document in this case???
Thanks in advance!
 
Regards,
Werner.