My script to enable teleporter if there are 2 or more players isn't working?

local amountOfPlayers = game.Players.NumPlayers

while true do
    if amountOfPlayers >= 2 then
        game.Workspace.Lobby.Teleporters.TeleporterA.Teleporter1.Script.Disabled = false --turns the teleporter off
        print("Enough Players")
        print(amountOfPlayers)
        wait(10)
    else 
        game.Workspace.Lobby.Teleporters.TeleporterA.Teleporter1.Script.Disabled = true --turns teleporter on
        print("Not Enough Players")
        print(amountOfPlayers)
        wait(10)
    end
end

I am making a game with 3 teleporters and I want it so when there is 2 or more players the teleporters will be enabled. When I run the game by myself I get not enough players like a should but it also prints 0. It does the same with 2 players.