Why isn't my Plane strafing left/right?

i want to make my plane strafe left and right with “A” and “D” but it doesn’t work the way i’ve done it.

Why isn’t this working?
I’m using the Flying Plane Template from UE4.

it works, so when i want to make something that will move the character no matter which world direction it’s facing, i should do Local Offset right?
I also split that vector input in AddActorLocalOffset instead of making vector.