Moving A Part?

There are no errors? I expect the code to move the part in the direction of the mouse if you are top down on the part.

local plr = game.Players.LocalPlayer
local Ball = nil
local Screensize = script.Parent:WaitForChild("Shadder").AbsoluteSize

function glideTorwards(currentValue,targetValue,rate)
	if currentValue < targetValue then
		return math.min(targetValue,currentValue + rate)
	elseif currentValue > targetValue then
		return math.max(targetValue,currentValue - rate)
	else
		return targetValue
	end
end

function WFB()
WFBRequire()
while wait() do
local Ba = _G.PlayerBall
	if Ba ~= nil then
		return Ba
	end
end
end

function WFBRequire()
	local MouseY = nil
	local MouseX = nil
	if plr:GetMouse().Y > Screensize.Y/2 then
		MouseY = 2
	elseif plr:GetMouse().Y < Screensize.Y/2 then
		MouseY = -2
	end
	if plr:GetMouse().X > Screensize.X/2 then
		MouseX = 2
	elseif plr:GetMouse().X < Screensize.X/2 then
		MouseX = -2
	end
	repeat wait() until Ball ~= nil
	while wait() and Ball ~= nil do
		Ball.Position = Vector3.new(glideTorwards(Ball.Position,(Ball.Position + Vector3.new(MouseX,0,MouseY)),2))
	end
	WFB()
end

Ball = WFB()