Multiple VPNs Using SuSEfirewall2

Has anoyone else successfully set up multiple site to site vpns using SuSEfirewall2?

My issue is in FW_MASQ_NETS=

I followed the example and set FW_MASQ_NETS="192.x.x.x.x/24,!172.x.x.x.x/32"

This works great for being able to communicate back and forth with one vpn. But what if I want to add another site to site vpn, then it seems to break. I tried "192.x.x.x.x/24,!172.x.x.x.x/32, !192.168.0.0/24" That didn't work then I tried the same but 192.x.x.x/24,!172.x.x.x.x/32

Any ideas is appreciated!