How do I make it so that my localscript tool only works when equipped?

I have a tool to make you levitate upwards in a localscript in a filtering not enabled game, but you don't need to equip the tool to levitate when you click. How do I make it so that you do?

This is the script.

local Character = game.Players.LocalPlayer.character
local TorPos = Character.HumanoidRootPart.Position
local Player = game.Players.LocalPlayer
local HumRoot = Character.HumanoidRootPart
local Mouse = Player:GetMouse()
local MystSkill = script.Parent.Mysticism.Value
local LevHeight = Vector3.new(0,.5*MystSkill,0)

script.Parent.Equipped:connect()


local Levitating = false

function levitate()
	if Levitating == false then 
		Levitating = true
		
		local BodyPos = Instance.new("BodyPosition")
		BodyPos.Parent = Character.HumanoidRootPart
		
		while Levitating == true do
			
				BodyPos.Position = HumRoot.Position + LevHeight
				wait(.000001)
			
			end
			BodyPos:Destroy()
		end
		
	end


function SetLevFalse()
	Levitating = false
end

function PrintPos()
	print(HumRoot.Position)
	print("MystSkill", .5%MystSkill)
end


Mouse.Button1Down:connect(levitate)
Mouse.Button1Up:connect(SetLevFalse)
Mouse.Button2Down:connect(PrintPos)

Umm you can use the Equipped event.

Ex.

local tool = script.Parent.Parent
local party = script.Parent

tool.Equipped:connect(function()
	party.BrickColor = BrickColor.new("Really Red")
end)

tool.Activated:connect(function()
	print 'Hi'
end)

^^ This is a simple and easy script but, the use of the Equipped event makes it so that when equipped, the part changes color. Just use .Equipped: for equipping and .Unequipped for well, I guess you can figure that out.

If this doesn't help, then sorry.