Parameter to limit user traffic in RouterOS

I'm using RouterOS and radclient to pass parameter using PPP protocol. example: echo "User-Name := user" | radclient xx.xx.xx.xxy: port disconnect [secret] But now I need a parameter to limit user traffic of download/upload to 6 GB. If pppoe user connection reach that limit so connectios is droped. I'was reading a mk documentation which website is http://www.mikrotik.com/testdocs/ros/3.0/aaa/ppp.php and I've found in the session Monitoring Active PPP Users: limit-bytes-in (read-only: integer) - maximal amount of bytes the user is allowed to send to the router limit-bytes-out (read-only: integer) - maximal amount of bytes the router is allowed to send to the client Are there a way to send that to RouterOS using radclient? -- -hUgLeO-♑