Asterisk 10 call-limit not working

Hi guys
I need help with limitation of current calls for some users. I use asterisk 10 as realtime. I need limit current calls for some queue members (users). I tried use “call-limit” or “call_limit” in my “Users” table - It´s not working, other way is use “callcounter=yes” in “users” table, “ringinuse=no” in "my “queue_table” and use Function_HINT in my extensions but I see error in conslole like “No such application ‘hint’ for extension”.
Pleas help me