My Tool works in Studio mode, but not in Online mode. Is there something wrong with my Script?

As the title said, I need help to configure these scripts to work "online"... I have tryied many things, but nothing worked, that is why I'm here. Please, give me a hand :D

The following scripts are a LOCK TOOL that verifies if the selected part have a IntValue of 1, then change it to locked or unlocked. Its working on Studio with no error reports on output. It just wont work at online... :(

*Representation in StarterPack

         -LockTool --> (HopperBin)
                -LockScript -->(Script)
                -LocalScript -->(LocalScript)

%%%%%%% LocalScript (LOCAL SCRIPT) %%%%%%%%%%

wait(0.1)

active = false

selectionBox = Instance.new("SelectionBox")
selectionBox.Color = BrickColor.Red()
selectionBox.Visible = true

selectionLasso = Instance.new("SelectionPartLasso")
selectionLasso.Color = BrickColor.Black()
selectionLasso.Humanoid = game.Players.LocalPlayer.Character.Humanoid

gui = Instance.new("ScreenGui")
text = Instance.new("TextLabel")
text.Parent = gui
text.Text = "No brick selected"
text.BackgroundColor3 = Color3.new(1/256*17, 1/256*17, 1/256*17)
text.BorderColor3 = Color3.new(1/256*17, 1/256*17, 1/256*17)
text.TextColor3 = Color3.new(1, 1, 1)
text.Position = UDim2.new(0, 0, 1, -20)
text.Size = UDim2.new(0, 100, 0, 20)
text.BackgroundTransparency = 0.25

function onMouseButton1Down(target)
	if target ~= nil then	
		if target:FindFirstChild("Value") ~= nil then		
			if target.Locked == true then
				target.Locked = true
				target.Velocity = Vector3.new(0, 0, 0)
				target.RotVelocity = Vector3.new(0, 0, 0)
				selectionBox.Color = BrickColor.Green()
				text.Text = "Brick is Locked"
			else
				target.Locked = false
				target.Velocity = Vector3.new(0, 0, 0)
				target.RotVelocity = Vector3.new(0, 0, 0)
				selectionBox.Color = BrickColor.Red()
				text.Text = "Brick isn't Locked"
			end
		end
	end
end

function onMouseMoved(target)
	if target ~= nil then
		if target:FindFirstChild("Value") ~= nil then			
			if target.Locked == false then
				selectionBox.Adornee = target			
				selectionBox.Color = BrickColor.Red()
				selectionLasso.Part = target			
				target.Locked = false
				target.Velocity = Vector3.new(0, 0, 0)
				target.RotVelocity = Vector3.new(0, 0, 0)
				selectionBox.Color = BrickColor.Red()
				text.Text = "Brick isn't Locked"
			else
				selectionBox.Adornee = target			
				selectionBox.Color = BrickColor.Green()
				selectionLasso.Part = target			
				target.Locked = true
				target.Velocity = Vector3.new(0, 0, 0)
				target.RotVelocity = Vector3.new(0, 0, 0)
				selectionBox.Color = BrickColor.Green()
				text.Text = "Brick is Locked"
			end
		else
			selectionBox.Adornee = nil
			selectionLasso.Part = nil			
			text.Text = "Brick is Protected"
		end		
	else
		selectionBox.Adornee = nil
		selectionLasso.Part = nil			
		text.Text = "Brick is Protected"
	end
end

function onSelected(mouse)
	if active == false then
		active = true
		gui.Parent = game.Players.LocalPlayer.PlayerGui
		selectionBox.Parent = game.Players.LocalPlayer.PlayerGui
		selectionLasso.Parent = game.Players.LocalPlayer.PlayerGui
		mouse.Move:connect(function() onMouseMoved(mouse.Target) end)
		mouse.Button1Down:connect(function() onMouseButton1Down(mouse.Target) end)
	end
end

function onDeselected()
	if active == true then
		active = false
		gui.Parent = nil
		selectionBox.Parent = nil
		selectionLasso.Parent = nil
	end
end

script.Parent.Selected:connect(onSelected)
script.Parent.Deselected:connect(onDeselected)

%%%%%%%%% LockScript (SCRIPT) %%%%%%%%%%%%

bin = script.Parent

function thread(func)
	coroutine.resume(coroutine.create(func))
end

function makeMessage(text, time)
	print("msg")
	thread(function()
		local ply = bin.Parent.Parent
		if ply then
			local m = Instance.new("Message")
			m.Name = "LockToolMessage"
			m.Text = text
			m.Parent = ply
			wait(time)
			m.Parent = nil
		end
	end)
end

function onButton1Down(mouse)
	target = mouse.Target
	if target:FindFirstChild("Value") == 0 then
		makeMessage("Protected Part", 3)
	else 
		if target:FindFirstChild("Value") ~= nil then	
			if target.Locked then
				target.Locked = false
				makeMessage("Unlocked \"" .. target.Name .. "\"",3)
			else
				target.Locked = true
				makeMessage("Locked \"" .. target.Name .. "\"",3)
			end
		end
	end
end

function onSelected(mouse)
	mouse.Icon = "rbxasset://textures\\GunCursor.png"
	mouse.Button1Down:connect(function() onButton1Down(mouse) end)
end

bin.Selected:connect(onSelected)

Try and change the LockScript to Local script and see if that works qq

(Sorry im a noob in Lua)

I'm not sure if I should, but I will try, tnx