How do I get this click giver to dispense only one time?

How do I get the clicker giver to dispense a tool only one time. I tried this code but doesn't work.

playerNameList = {}
	function onClicked(player)
	local playerName = player.Name
	local executeFunction = true;
	--Check to see if the player has clicked before
	--This will not execute if the value is false or nil. 
	if(playerNameList[playerName]) then
		executeFunction = false;
	end
	if(executeFunction) then
  		function onClicked(part)

local player = game.Players.LocalPlayer
local giver = game.Players:FindFirstChild(""..player.Name.."")
print("Clicked")
if player ~= nil then
local wep = game.Lighting.SCAR:clone() -- Change NAME to your model name and put it in the Lighting.
wep.Parent = giver.Backpack
end
end

script.Parent.ClickDetector.MouseClick:connect(onClicked)
	end	
	playerNameList[playerName] = true
  end
  script.Parent.ClickDetector.MouseClick:connect(onClicked)