I have got a router Vigor 3900 with 4 WANs. Firmware:1.3.2
I will place an example for better understanding my problem:

I have two different hosts: host2 (192.168.1.2) and host3(192.168.1.3), both PCs in LAN1. I have created a route policy for each one, for host2 I want to route all traffic through WAN2 and for that I created a route policy and defined in source type :subnet and in IP address :192.168.1.2. Below in route rule : user defined and output interface:WAN2. Same with host3 but changing to WAN3.
With that it is supposed that all traffic from host2 will be fixed to WAN2 and same with host3 to WAN3.

My problem is that the route (WAN2 or WAN3) that each host follows does not depend on the above configuration, but in the position (priority) of each one in the Policy Rule tab, i.e, if host3 is under host2 (lower priority) in the list , all traffic will go through WAN2 instead of WAN3 as was indicated in the policy rule for host3 and viceversa. If change position placing host3 above host2, now traffic is correct as I desire in host3, but now host2 send traffic through WAN3 instead of WAN2.

Any help, please?