how to send to a switch Port Priority ?

[George Comanescu]

hello I have the following users file  and I wold like to send to the switch 
on authentification PortPriority 
...
a               auth-Type := Local, User-Password == "a"
                Service-Type = Administrative-User,
                Reply-Message = "Salut user:A!"

b               Auth-Type := EAP, User-Password == "b"
                Service-Type = Administrative-User,
                Reply-Message = "Hi :B!",
????         Port-Priority = Platinum,
                Tunnel-Type = VLAN,
                Tunnel-Medium-Type = IEEE-802,
                Tunnel-Private-Group-ID = "256",
                Vendor-Specific = "562"

...


-- 
Cu respect,
George Comanescu