GL-AXT1800 - How to add VLAN for PPPoE connection?

Hi all, I just new using AX-1800 and would like to know how to setup PPPoE using VLAN ID 500 ?
Is there any way doing it on LUCI?

Just upgrade to 4.1 firmware and set up it

Is that BETA 4.1.0 release2 ?

Yes it is. Pls try and see