Pop up gui for part to change transparency of tool part when key pressed

Im trying to make it so when i walk up to the part the gui shows and when the person presses a key it changes the transparency of a part in the tool there holding

local HumanoidRootPart = game.Players.LocalPlayer.Character:WaitForChild(“HumanoidRootPart”)
local UIS = game:GetService(“UserInputService”)
local part = game.Workspace.Part
local tool = game.Players.LocalPlayer.Backpack.Pizza
local cheese = tool.cheese

if keyCode.keyCode == Enum.keyCode.E then

	cheese.Transparency = 0

Ok, I suppose you have a error or something?

nevermind thanks anyways i found a fix.