ContextActionService:SetPosition() not working?

Help and Feedback Scripting Support
#1

So I have this part of my script:

local function mobileForce()
	if not forceDeb then
		forceEvent:FireServer(plr:WaitForChild("ForceSkillType").Value)
		forceDeb = true
		wait(1)
		forceDeb = false
	end
end

local mobileButton = context:BindAction("Force", mobileForce, true, "E")
context:SetTitle("Force", "Use Force Skill")
context:SetPosition("Force", UDim2.new(0,0,0,0))

and I set the position of the mobile button. Well, guess what?

IT DIDN’T WORK.

I don’t know why, maybe I did it wrong?