[Zope] How to use "and" operator in dtml-if

Hi All, Can anyone show me how to use the operator "and" in the tag <dtml-if> This is how i've used it but it doesn't worked for me. Zope does not give me any error when i tried to execute this code and it also does not execute the intended script. <dtml-if "level_in=='Development' and AUTHENTICATE_USER.has_role('Development')"> Then execute script <dtml-else> Permission Denied! </dtml-if> Thanks for any suggestion, -- Mike Tran Shufflemaster Gaming Inc.