help me plz [ISP failover+LB PCC]

i use load balance 3 wan(pppoe-out) with pcc type
if 1 in 3 link down from ISP it will promblem to use internet

i try this it not work for me
http://wiki.mikrotik.com/wiki/Advanced_Routing_Failover_without_Scripting

please help me
sorry i’m fair english

OK I searched and I understand