How can I make a tool be deleted once you click?

So I am having trouble making a barricade tool that when the model is placed (or the mouse is clicked) will place my block model. I am needing some help on adding a peice of script that will delete the tool from my backpack/inventory (im using the standard roblox backpack).

Here is my script so far:

bin = script.Parent

function onButton1Down(mouse)

	local model = bin.model:clone()

	model.Parent = game.Workspace
	model:MakeJoints()
	model:MoveTo(mouse.hit.p)

end

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

if enabled then
	player.Backpack.tool:Destroy()
end

bin.Selected:connect(onSelected)

Add this to the function at line 3:

mouse.Button1Down:Connect(function()
	player.Backpack.tool:Destroy()
end)