Get count of releases per project

I'm trying to return all projects with at least one release and order them by the number of releases they have. I have tried the following request and other similar requests but I'm unable to get a successful response.

http://tifgroup.tpondemand.com/api/v1/Projects/?include=[Name,Releases-Count]&where=(Releases-Count gt 0)&orderbydesc=Releases-Count

The problem seems to occur when I try to filter or sort. Any suggestions?