Problem to assign freamed-pool in update reply

Hi everyone I have problem width the update reply. I check the total acctinputocted for the user and flag the Mikrotik-Xmit-Limit attribute. When I set the ip address for the module my pppoe user on mikrotik get this ip address successfuly but when I use the framed-pool and set the ip-pool name in mikrotik the clinet can not get the ip from the ip-pool. please help me to fix this problem user_limit1{ reject = 1 } if(reject){ update reply{ Mikrotik-Rate-Limit := "256K/256K" # <----This line is work fine Framed-IP-Address := "1.1.1.2" # <----This line is work fine Framed-Pool := "Expire" # <----This line isn't work } }