modify realm in authenticate section

hi is it possible to modify realm like this ? and then use the realm in users file ..see below Auth-Type ldap { group { ldap_admin { reject = 1 ok = return } if (ok) { update reply { Realm:="admin" } } ldap_peda { reject = 1 ok = return } if (ok) { update reply { Realm:="pedago" } } } } users file DEFAULT Realm=="pedago" Tunnel-Type=VLAN, Tunnel-Medium-Type=6, Tunnel-Private-Group-ID=20, Reply-Message="ok_hostpeda" DEFAULT Realm=="admin" Tunnel-Type=VLAN, Tunnel-Medium-Type=6, Tunnel-Private-Group-ID=10, Reply-Message="ok_hostadmin"