Yes, you could create one physical, one virtualAP SSID, then apply use mangle depending on traffic source interface to force exit through the desired WAN.

Thanks dear pukkita for your fast response. Can you please let me know it more details as I'm totally newbie in this case?

Hi every one
I'm using a 951g routerboard along with a Huawei E8372 LTE dongle. I use a SSTP VPN connection on the router.
My question, is it possible to have 2 different wireless interface, one broadcasts VPN internet, and another wireless interface broadcasts internet without VPN?
Thnx