Solved How Do I Cancel runTaskTimer() If There Is An Event Happened

So I want to cancel my task when an PlayerItemHeldEvent happens.

I am doing simple gun reload and want to check: if a player changed his hotbar slot, then the reload task will be cancelled

Here is the code (idk how it can help):

Code (Java):

public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        //Player only command
        if(sender instanceof Player){
            Player p = (Player) sender;
            int timeLeft = cooldownManager.getCooldown(p.getUniqueId());
            //If the cooldown has expired
            if(timeLeft == 0){
                //Use the feature
                p.sendMessage(ChatColor.GREEN + "Feature used!");
                //Start the countdown task
                cooldownManager.setCooldown(p.getUniqueId(), CooldownManager.DEFAULT_COOLDOWN);
                new BukkitRunnable() {
                    @SuppressWarnings("deprecation")
                    @Override
                    public void run() {
                        int timeLeft = cooldownManager.getCooldown(p.getUniqueId());
                        cooldownManager.setCooldown(p.getUniqueId(), --timeLeft);
                        p.sendTitle("", ChatColor.GREEN+"                   Перезарядка...");
                        if(timeLeft == 0){
                            p.getItemInHand().setDurability((short) 0);
                            p.sendTitle("", ChatColor.GREEN+"                   Перезаряжен!");
                            this.cancel();
                        }
                    }
                }.runTaskTimer(this.plugin, 20, 20);

            }else{
                //Hasn't expired yet, shows how many seconds left until it does
                p.sendMessage(ChatColor.RED.toString() + timeLeft + " seconds before you can use this feature again.");
            }
        }else{
            sender.sendMessage("Player-only command");
        }

        return true;
    }

And here is CooldownManager.java code (again, idk how it can help):

Code (Java):

public class CooldownManager {

    private final Map<UUID, Integer> cooldowns = new HashMap<>();

    public static final int DEFAULT_COOLDOWN = 10;

    public void setCooldown(UUID player, int time){
        if(time < 1) {
            cooldowns.remove(player);
        } else {
            cooldowns.put(player, time);
        }
    }

    public int getCooldown(UUID player){
        return cooldowns.getOrDefault(player, 0);
    }
}

 

Thank you so much!