Toggle nightvision

Hey Everyone, I am working on another part of my plugin, and I have a major issue, basically when the /nightvision command is toggled if their are multiple people on at once the command glitches out. Is there a way to make it so each player is separate and it isn't all joined as one.

Code:

public class Vision implements CommandExecutor {
    public boolean isReaching = false;
    
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
                Player player = (Player) sender;
                if(cmd.getName().equalsIgnoreCase("nightvision")){
                if(!isReaching){
                isReaching = true;
                player.addPotionEffect(new PotionEffect(PotionEffectType.NIGHT_VISION, 1000000, 0));
                player.sendMessage(ChatColor.GOLD + "Night Vision:" + ChatColor.GREEN + "" + ChatColor.BOLD + " Enabled!");
                }
                else if(isReaching){
                isReaching = false;
                player.removePotionEffect(PotionEffectType.NIGHT_VISION);
                player.sendMessage(ChatColor.GOLD + "Night Vision:" + ChatColor.RED + "" + ChatColor.BOLD + " Disabled!");
                 }
                else {
                return false;
             }
         }
       return false;         
    }
}

Thank you for your time looking at this thread
- Random

 

What do you mean 'glitches out'? please be more specific.

 

This code looks very similar, if you stole this online please just stop what your doing, also don't add a player join delay on this plugin make a separate plugin for that.

 

The problem with your code is that you have only one Boolean for the entire server. Use a hashmap with UUIDs as the key and booleans as the value. Then when you need to get whether a player has night vision enabled, just get the Boolean using their UUID