Id have briged two openvpn sucefully,  my lan is 10.10.20.0, gateway 10.10.20.1
My openvpn-client have a IP 192.100.60.2 and uses 192.100.60.1 to route another networks.
for example this is are defined in my openvpn client, and work good,
route 192.168.1.0 255.255.255.0 192.100.60.1 on opvnc2

So from this firewall i can reach for example to 192.168.1.50.ping ok, but, any client of my lan can reach to that ip.

Things i was try…

1-Nat 1;1 , work for the gateway getting by openvpn client , but i can go beyond of this point.
2-Nat obound i try many configurations but notheing works-

Anybody can give a little help_ Cheers
Thnks