I have the error W001: Unknow global 'Player'?

I've been trying to make a Save Data system (If someone could help me with that too) because any of what i've tryied worked then i tryied with some YT videos and while i was copying the script (I write them) i saw this error, the script is..

1. local Pitote = game:GetService("DataStoreService"):GetDataStore("Pitote")
2. local Pito = Pitote:GetDataStore("Condon")
4. game.Players.PlayerAdded:Connect(function(Player)
5. local Piernas = Instance.new("Folder", Player)
6. Piernas.Name = "leaderstats"
7. local Coins = Instance.new("IntValue", Player)
8. Coins.Name = "Coins"
9. Coins.Value = Pito:GetAsync(Player.UserId) or 0
10. Coins.Changed:Connect(function()
11. Pito:SetAsync(Player.UserId, Coins.Value)
13. end)
14. end)
16. game.Player.PlayerRemoving:Connect(function()
17. Pito:SetAsync(Player.UserId, Player.Piernas.Coins.Value)
18. end)

The error ocurrs on line 17 "(Player.UserId and Player.Piernas)" Any help?