@EventHandler
    public void OnPlayerRocket(PlayerInteractEvent event){
        final Player player = event.getPlayer();
        if (!plugin.RocketCooldown.contains(player.getName())){
             if (!plugin.RocketCooldown2.contains(player.getName())){
                if((event.getAction() == Action.RIGHT_CLICK_AIR || event.getAction() ==Action.RIGHT_CLICK_BLOCK) && player.getItemInHand().getType() == Material.FIREWORK){
                player.setVelocity(player.getLocation().getDirection()
                        .multiply(1.05).setY(1.15));
                player.setExp(0.50F);
                plugin.RocketCooldown2.add(player.getName());
            }
             }
             if (plugin.RocketCooldown2.contains(player.getName())){
                    if((event.getAction() == Action.RIGHT_CLICK_AIR || event.getAction() ==Action.RIGHT_CLICK_BLOCK) && player.getItemInHand().getType() == Material.FIREWORK){
                        player.setVelocity(player.getLocation().getDirection()
                                .multiply(1.05).setY(1.15));
                        plugin.RocketCooldown.add(player.getName());
                        player.setExp(0);

             }

             }
        }
    }
    @EventHandler
    public void OnGround(PlayerMoveEvent e){
        Player p = e.getPlayer();
        if(p.getLocation().getBlock().getRelative(BlockFace.DOWN).getType() != Material.AIR) {
            plugin.RocketCooldown.remove(p.getName());
            plugin.RocketCooldown2.remove(p.getName());
            p.setExp(1);
        }
    }