[Zope] dtml methods and namespace

[Luca Dall'Olio]

Hi to everybody,

I have a simple dtml-method "assignment-action" that is called upon a 
form post.
Depending on the form request data, a <dtml-if> chooses between one of 
two dtml-documents : "assigment-success" and "assignment-failure" :

<dtml-if  "iscorrect()">
 <dtml-var assignment-success>
<dtml-else>
 <dtml-var assignment-failure>
</dtml-if>

My trouble is that neither the "assignment-success" nor the 
"assignment-failure" dtml-documents seem to be pushed on the namespace : 
inside them title_or_id references data from their caller, this() and 
PARENTS do not evaluate right... is there a smarter way to call a 
dtml-document inside a dtml-method (), so that it it pushed on the 
namespace stack? Should I use somehow the <dtml-with> tag?

I understand that page templates would be way easier and cleaner, but I 
would like to complete this project and then try them out in the next one...

thank you in advance,
Luca