wlan_ap-bridge,can a client give internet?

This is the problem i can’t figure out, i have an router that has
default gateway: 172.1.1.2 from “Directional” interface
dns:172.1.1.2 from “Directional” interface

ip: 192.168.1.1/24 from “ap-bridge” interface
DHCP in the “ap-bridge” interface that gives ips from 192.168.1.0/24, dg:192.168.1.1, dns 192.168.1.1.

What i wan’t is the clients connected to the ap-bridge interface to use the internet connction from the modem connected at ap-bridge interface, with ip 192.168.1.2

i can’t seem to get it working, and if its possible i’d like the traffic towards 192.168.1.2 to be NATed… any ideas?
Thanks in advance.