If then else statement not working?

I'm trying to make a Gate and it's going pretty well, and it works well too, however, the problem is the debounce variable I've set up for it is not working.

Button.MouseClick:Connect(function()

if DoorDebounce == false then
		DoorDebounce = true 
		if DoorIsUp then
			Door.Anchored = false
			print("Door is lowering")
			DownTween:Play()
			Door.Anchored = true
			DoorIsUp = false
		else
			Door.Anchored = false
			print("Door is opening")
			UpTween:Play()
			DoorIsUp = true
			Door.Anchored = true
		end
		DoorDebounce = false 
	end

end)

What am I doing wrong?