Here is the way that works for me to set and change variables:
(This is a snippet from in use production code. It calculates a running total
for items on an order.)
...
<dtml-call "REQUEST.set('otot',0)">
<dtml-in "Query.OrderItems()" sort=sord>
<dtml-let n_otot="otot + (quantity*unitprice)">
<dtml-call "REQUEST.set('otot',n_otot)">
</dtml-let>
...
</dtml-in>
...
</td><td align="right"><b>Total:</b></td><td><dtml-var otot
fmt=dollars-and-cents>
...
__________________________________________________________________
Jim Sanford
^ Database Engineer
^ ^ ^ Accelerated Technology, Inc.
^ ^ 720 Oak Circle Drive East
^ ^ ^ Mobile, AL 36609
^ ^ ^ Voice: 334-661-5770 fax: 334-661-5788
^ ^ E-Mail: jsanford@atinucleus.com
Web: http://www.atinucleus.com
Source Code, No Royalties, Any CPU...It just make sense !
__________________________________________________________________