A little help?

I used this script to charge players Points for a sword in my shop.

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

function checkForword()
    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 leaderstas 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 button I put the script in, I don't get the sword. Help?