Brocade with Cisco ISE tacacs+

trying to authenticate Cisco ISE tacacs+ with brocade SAN sw with chassi admin role

Tired the below syntax but unable to set the chassis role correctly.

Anyone can help on what is the syntax for chassis role admin in Cisco ISE?

 service = exec {
                brcd-role = admin
                brcd-AV-Pair1 = "homeLF=128;LFRoleList=admin:128"
                brcd-AV-Pair2 = "chassisRole=admin"

}