function getPlayerNumber(player)
    return (player.userId / math.random(1,5)) * math.random(1,99)
end
function saveNum(player,name,val)
    player:SaveNumber(name,val)
end
function loadNum(player,name)
    return player:LoadNumber(name)
end

game.Players.PlayerAdded:connect(function(player)
    repeat player.Changed:wait() until player:FindFirstChild("PlayerGui")
    local m = Instance.new("Message",player.PlayerGui)
    m.Text = player.Name..", hi!"
    wait(3)
    while true do
        if player.DataReady then
            m.Text = "DataReady is true, starting..."
            wait(2)
            m.Text = "About to load data, if this message stays here for more than a second I have failed. Or Roblox."
            local num
            local load = pcall(function() num = player:LoadNumber("MagicNumber") end) --[1]
            if not num then
                num = getPlayerNumber(player)
            end
            if not pcall(function() saveNum(player,"MagicNumber",num) end) then --[2]
                m.Text = "Error while saving number, aborting..." --[3]
                break --[4]
            end --[5]
            m.Text = "Your magic number is: "..num
            local h = Instance.new("Hint",player.PlayerGui)
            h.Text = "Your magic number: "..num
            wait(5)
            m.Text = "This magic number will stay with you, without you typing in any save code even if you leave and rejoin, and even on another server."
            wait(5)
            m.Text = "If this number is different from last time, an error has occured."
            wait(5)
            m.Text = ""
            break
        else
            m.Text = "DataReady is false, unable to load..."
            local p = player.Changed:wait()
            m.Text = "Retrying after "..p.. "changed"
        end
    end
end)