[Zope] embed an SQL method inside a <dtml-in> tag

Hi, I tried to embed an SQL method statement inside my <dtml-in> listing, the problem I'm facing was, will Z sql method detact the value I passed in, let say : # This is my first listing <dtml-in abc_sql_statement> #another sql_statement <dtml-in bcd_statement> <dtml-var xyz> <dtml-in> </dtml-in> # The bcd_statement will not be requested by a form The reason being I do this is because I need to do some interaction in the results of bcd_statement. Any one can help or done this before ?? Please help. Cheers Wai