How do I make a Tool that makes truss?

I want to make a script where if someone clicks with the tool a truss will appear and then remove itself I dont know why it is not working I put a click detector on the tool and I want the truss to go to the players position.

script.Parent.ClickDetector.MouseClick:Connect(function(playerWhoClicked)
	local new = Instance.new("TrussPart")
	new.Position = playerWhoClicked.leftleg.Position
	new.Size = 2,25,2
	new.Parent =  game.Workspace
	wait (20)
	new:Destroy()
end)

Please answer!!!! Thank you if you do!

At line 3 leftleg has a space and is know as Left Leg it is also in the character not the player

    new.Position = playerWhoClicked.Character["Left Leg"].Position -- line 3

But that's not fixed is it? remember we need to use cframes here

new.CFrame.new(playerWhoClicked.Character["Left Leg"].Position)