I create User Group based on Sites for Service Catalog purpose. Some Users that I imported from AD have "Site" information but others just don't have any information (blank).

I want to create a filter in User Group that is "Site" + is not  + "Lisbon", and I want that this group to have all requester that have a value differente from  Lisbon or have nothing (blank) on "Site", but this querie just don't get "blank" users...

I really need to do this to use with Service Catalog SLAs..

thanks,

regards,

Henrique Alves.