Datastore does not save when player leaves?

Hi there! My datastore save script won't work. But, when I execute it using the command line, it does. Any help is welcome.

local DataStoreService = game:GetService("DataStoreService")
local Wins = DataStoreService:GetDataStore("Wins")

game.Players.PlayerRemoving:connect(function(player)
    print('player left')
    local success, newName = pcall(function()
        return game:GetService("DataStoreService"):GetDataStore("Wins"):SetAsync(114962047, 55)
    end)

    if success then
        print("success")
    end
end)

Thanks in advance, Jonas