IP to a certain WAN - 2 WANs from the same ISP issue

[pbnet]

Hello,
I have 2 connections at the same ISP.

• WAN1 - PPPoE
• WAN2 - PPPoE

If I look in the gateways (Status/Gateways) I have:

• WAN_PPPOE: Gateway: 10.0.0.1
• WAN2_PPPOE: Gateway: 10.0.01

I created a VLAN30 that gets a certain class of IPs (eg. 10.0.0.x). I want all the IPs from that WLAN to only use WAN2.
The problem:
By default, the machine from VLAN30 go through WAN1, even if the firewall rule is:

• Protocol: IPv4, Source: VLAN30, Port: *, Destination *, Port: * Gateway: WAN2_PPOE

Am I missing something?

Thanks for any hint.