[Zope] How to pass values from python script back to calling dtml-method ???

[Anton A. Zotov]

Greeting, people !
I may seem completely ignorant, but Zope namespaces are driving me wild for
the last couple of days :-(
I need to solve a pretty simple task:
I have a dtml-method which calls a Python script. When that python script is
through, it has a variable (say, returnValue="return value"). How can I
access this variable in calling dtml method ?
Please help !!!!