[Zope] headache

[D. Rick Anderson]

Arrggh. I'm stuck on somthing really simple here. I have the following 
statements in a method:

<dtml-call "REQUEST.set('periodsplit', _.str(period).split('-'))">
<dtml-call "REQUEST.set('dateYear', _.int(periodsplit[0]))">

If I set the var 'period' and view it directly it works just fine 
(period is in the format 2002-5), but if I call it from another object 
(methodname(_.None, _, period='2002-11')) it errors with:

global name 'periodsplit' is not defined

and the error points to the second call there. How can it not be 
defined? I just set it?!!? Is REQUEST.set not pushing those onto the 
namespace when called from another object? I've never had this problem 
before.

TIA

Rick