Hi Vivek,
You shouldn’t need code for that, just a blueprint (see unreal’s tutorials on blueprints, they are good)
I am not where I can check right now, but in blueprints you can get the transform from a motion controller, right click on the transform output pin and “break” it (separates x,y,z and roll pitch yaw onto 6 output pins) then you can copy whatever data you want. To restrict x just don’t connect that pin when you transfer the motion controler position to the target object.