Routing Failover FOR 2 IPs with the same Gateway

I’m using http://wiki.mikrotik.com/wiki/Advanced_Routing_Failover_without_Scripting for Fail-over AND It works for me for about 3 months, BUT now my WANs have same Gateway :frowning:
I tried a few ways by using % sign like:

ip route add gateway=90.159.233.1%WAN1 pref-src=90.159.230.56

but not succeeded :frowning:

any ideas?

up^

any reason for you to use fail over on one WAN link ?

I have 3 internet sources, 2 of it from the same provider (have the same Gateway)