Tycoon script isn't working?(unsolved)

This script worked yesterday, but when I started adding upgrades it wont work?

game.Players.PlayerAdded:connect(function(player)
    local leaderstats = Instance.new("Model",player)
    leaderstats.Name = "leaderstats"
    local money = Instance.new("IntValue", leaderstats)
    money.Name = "Money"
    money.Value = 0
function addMoney(b)
    if b.Name == "MONEYBRICK" then
        money.Value = money.Value + 5
        if game.Workspace.UPGRADE1.Touched and b.Name == "MONEYBRICK" then
        money.Value = money.Value + 5
        end
    end
end
function buyupgrade1()
    if money.Value >= 50 then
        money.Value = money.Value - 50
    c = game.Lighting.UPGRADE1:Clone()
    wait(.5)
    c.Parent = game.Workspace
    game.Workspace.pp:Destroy()
    c.Transparency = 0.7
    wait(1)
    c.Transparency = 0.5
    wait(1)
    c.Transparency = 0.3
    wait(1)
    c.Transparency = 0 
    end
end
end)
game.Workspace.pp.Touched:connect(buyupgrade1)
game.Workspace.HITPART.Touched:connect(addMoney)

Thanks.