[Zope] dtml-sqltest op=like optional?

Greetings, I am trying to get select * from customer <dtml-sqlgroup where> <dtml-sqltest id op=gt type=int optional> <dtml-and> <dtml-sqltest name op=like type=string multiple optional> <dtml-and> <dtml-sqltest contact op=like type=string multiple optional> </dtml-sqlgroup> to work - my intention is that none or more variables are needed. It seems that unless the type is int, I get select * from customer where (name like '' and contact like '' ) Is there anyway around this or to default the value of name and contact to '%' without lots of dtml-if statements? (actually - the like statement does not enter the wild card so like='Acme' does not return Acme Corp) BTW - connecting to a Postgres DB - if that makes a difference Don