Solved Scoreboard toggling

I would like to toggle a scoreboard in bukkit by using a command '/sb toggle'. However I can't seem to make it work because the compiler keeps looping through the code. So if I remove a key from the ArrayList, the compiler will continue it's executing which isn't what I want.

Code:java

 
// Creating the ArrayList to store the data.
 
ArrayList<UUID> toggle = new ArrayList<>();
 
// Checking if it contains the player's UUID.
 
   if (toggle.contains(p.getUniqueId())) {
 
// Removing the UUID from the ArrayList to turn the scoreboard off.
       toggle.remove(p.getUniqueId());
       p.setScoreboard(Bukkit.getScoreboardManager().getNewScoreboard());
       p.sendMessage(Main.msg + ChatColor.RED + "Scoreboard turned off.");
   } else {
// Adding the UUID again to the ArrayList so that we it can turn on.
       toggle.add(p.getUniqueId());
       SideScoreboard.getInstance().setScoreboardPlayer(p);
       p.sendMessage(ChatColor.GREEN + "Scoreboard turned on.");
   }
 

So the problem is that it keeps telling me that the Scoreboard is turned on. When it really should just toggle between off and on each time I execute the command.

EDIT : Had to make the ArrayList global, silly from me.