I am on Alfresco 4.2.  I have a custom content model, where some properties are restricted by list constraints.  I have followed Jeff Potts' tutorials on getting all the forms set up (thanks much for those, Jeff) but am stuck on getting the advanced search to work.  I'd like a user to be able to select none or more of the options for the property in the search.  When I use the "selectmany.ftl" control, though, there's a problem and the field doesn't display.  If I use the "selectone.ftl" control, of course, the user can only select one (and the choice is defaulted).  
I have seen several other posts in these forums with the same question, but none of them answered.  Can someone point me in the right direction?  Do I need to create a custom control ftl template?  
Thanks,
B