[Zope] dtml / zsql datatype problem

I am trying to call an sql method which requires and integer argument. If I call it with <dtml-in "getMilestones(milestoneid='<dtml-var milestoneid>')"> I get "Invalid integer value for milestoneid " If I use <dtml-in "getMilestones(milestoneid=<dtml-var milestoneid>)"> I get "invalid syntax, for tag <dtml-in "getMilestones(milestoneid=<dtml-var milestoneid>)">, on line 24 of editTask Can anyone help? I have been at this for over 2 hours. Thanks, Adam