Problem with EnderChest lid

Hi,

right now I'm coding a plugin which opens a custom inventory by opening an enderchest. But if I close the inventory the lid from the enderchest doesn't close...

My Code:

Code (Java):

@EventHandler
    public void onInventoryOpen(InventoryOpenEvent e){
        Player p = (Player) e.getPlayer();
        if(e.getInventory().getType().equals(InventoryType.ENDER_CHEST)){
            e.setCancelled(true);
           
            ItemStack disabled = new ItemStack(Material.RED_STAINED_GLASS_PANE);
            ItemMeta disabledm = disabled.getItemMeta();
            disabledm.setDisplayName("§cNo permissions");
            ArrayList<String> lore = new ArrayList<String>();
            lore.add("§7You don't have the permission to use this slot.");
            disabledm.setLore(lore);
            disabled.setItemMeta(disabledm);
           
            p.playSound(p.getLocation(), Sound.BLOCK_ENDER_CHEST_OPEN, 1, 1);
            Inventory inv = Bukkit.createInventory(null, 9*1, "§bEnderchest");
            if(p.hasPermission("enderchest.use.9")) {
            p.openInventory(inv);