Script Not Making Any Sense

Help and Feedback Scripting Support
1

So again… I’m making a side scroller and in my game I have ‘layers’ that the player is in and they’re able to switch between them with ‘W’ and ‘S’. It sort of works other than the fact that sometimes you move right off the map or into the scenery where it’s not suppose to allow you to go…

local MaxLayers = 3

local PlrLayer = 1

        elseif Input.KeyCode == Enum.KeyCode.W then -- Move Forwards
			if PlrLayer ~= MaxLayers then
				PlrLayer = PlrLayer + 1
				
				print("Moved Forwards, ".. PlrLayer)
				
				local root = player.Character:FindFirstChild("HumanoidRootPart")
				
				root.CFrame = root.CFrame * CFrame.new(-4,0,0)
			end
			
		elseif Input.KeyCode == Enum.KeyCode.S then -- Move Backwards
			if PlrLayer ~= 1 then
				PlrLayer = PlrLayer - 1
				
				print("Moved Backwards, ".. PlrLayer)
				
				local root = player.Character:FindFirstChild("HumanoidRootPart")

				root.CFrame = root.CFrame * CFrame.new(4,0,0)
			end
		end

It will typically work “okay” for a moment but then you’ll get times where it will print “Moved Forward a Layer” and it’ll literally move you backwards a layer and off the map to your death…