[Freeswitch-users] please help!!! how to limit each FS registered user's active calls

hi all: I'm trying to limit each registered user's active calls, so if that particular registered user pass the limit, FS stops sending any new incoming call to it and it can't make any new calls. I looked into 'limit' api, the counter increment everytime a call FS receives, regardless of which user it is for, and counter doesnt reset itself after the call is finished.