A little help?

I used this script for my shop gui.

player = script.Parent.Parent.Parent.Parent.Parent
cost = 5

function checkForSword()
	found = false
	for i, v in pairs(player.Backpack:GetChildren()) do
		if v.Name == "Sword" then
			found = true
		end
	end
	
	for i, v in pairs(player.Character:GetChildren()) do
		if v.Name == "Sword" then
		    found = true
		end
	end

    if Found == true then
	    return true
    else
	    return false
    end
end

script.Parent.MouseButton1Click:connect(function()
	leaderstats = player:FindFirstChild("leaderstats")
	if leaderstats then
		points = leaderstats:FindFirstChild("Points")
		if points then
			hasSword = checkForSword()
			if points.Value >= cost and hasSword == false then
				points.Value = points.Value - cost
				sword = game.Lighting.Sword:Clone()
				sword.Parent = player.Backpack
			end
		end
	end
end)

Whenever I click the GUI to buy an item, it doesn't take from leaderstats or clone the sword in my backpack. Any help?