Issue with creating drag effect

Help and Feedback Scripting Support
,
#1

I’m trying to create a drag effect so players can input their tools to the next tool upgrade.

Script 
local RunService = game:GetService("RunService")
local UserInputService = game:GetService("UserInputService")
local ContextActionService = game:GetService("ContextActionService")
--
local AnvilGui = script.AnvilGui
local Frame = AnvilGui.Frame.Frame
local InputSlot = Frame.InputSlot
local OutputSlot = Frame.OutputSlot
--
local DraggableObject = require(script.DraggableObject)
local CurrentAction
local CurrentDrag

local ScreenSize = workspace.CurrentCamera.ViewportSize
local UpgradeLabel = script.UpgradeLabel

local Anvil = {}

local function Drag(button)
	return function()
		local mL = UserInputService:GetMouseLocation()
		
		local scaleX = mL.X/ScreenSize.X
		local scaleY = mL.Y/ScreenSize.Y
		
		button.Position = UDim2.fromScale(scaleX,scaleY)
	end
end

local function ButtonHold(button) -- Fix size of button holding
	return function(actionName,inputState)
		if inputState == Enum.UserInputState.Begin then
			button.Parent = AnvilGui
			RunService:BindToRenderStep("Drag",Enum.RenderPriority.Camera.Value - 1,Drag(button))
		elseif inputState == Enum.UserInputState.End then
			CurrentDrag:Disable()
			RunService:UnbindFromRenderStep("Drag")
			Anvil:CheckPosition(button)
		end
	end
end

function Anvil:CheckPosition(button)
	local distance = (OutputSlot.AbsolutePosition - button.AbsolutePosition).Magnitude
	if distance < 100 then
		button.Parent = OutputSlot
	elseif distance > 100 then
		button.Parent = InputSlot
	end
	button.Position = UDim2.fromScale(0.5,0.5)
end

function Anvil:Init()
	local button = self:CreateButton()
	script.AnvilGui.Enabled = true
end

function Anvil:CreateButton()
	local new = UpgradeLabel:Clone()
	new.Parent = InputSlot
	ContextActionService:BindAction("Mouse",ButtonHold(new),false,Enum.UserInputType.MouseButton1)
end

function Anvil:End()
	ContextActionService:UnbindAction("Mouse")
	CurrentDrag:Disable()
	CurrentDrag = nil
end

return Anvil

I tried using absolute position only at first, but now I am just turning them into a fraction of the player’s screen so I can use scale instead.

The problems I have come across are that my cloned “UpgradeLabel” is tweeked in a random position when i’m dragging.

Right now I’m trying to get the button’s first original position and then add it into the equation.

Any ideas?