Czemu to nie dziala?

Witam, gdy wpisz komende drop to dziala, i jezeli klikne na ten przedmiot gdzie jest ta komenda(bedzie widac w kodzie) otwiera sie ale nic sie nie canceluje  Jak co to tylko wycinek z mojego kodu.

	@Override
	public boolean onCommand(CommandSender sender, Command cmd, String l, String[] args) {
		Player p = (Player) sender;
		if(cmd.getName().equalsIgnoreCase("drop")){
			Inventory inv = Bukkit.getServer().createInventory(null,9,"§6§lDrop serwerowy");
			inv.setItem(0, stone);
			inv.setItem(1, blank);
			inv.setItem(2, blank);
			inv.setItem(3, stonecase);
			inv.setItem(4, blank);
			inv.setItem(5, premiumcase);
			inv.setItem(6, blank);
			inv.setItem(7, blank);
			inv.setItem(8, cobblex);
			p.openInventory(inv);
		}
		if(cmd.getName().equalsIgnoreCase("stone0010")){
			Inventory inv2 = Bukkit.getServer().createInventory(null,9,"§5§lDrop ze stone");
			inv2.setItem(0, stonedrop);
			inv2.setItem(1, blank);
			inv2.setItem(2, blank);
			inv2.setItem(3, blank);
			inv2.setItem(4, blank);
			inv2.setItem(5, blank);
			inv2.setItem(6, blank);
			inv2.setItem(7, blank);
			inv2.setItem(8, redwool);
			p.openInventory(inv2);
		}	
		return false;

	}
	@EventHandler
	public void onInvClick(InventoryClickEvent e){
		
		Player p = (Player) e.getWhoClicked();
		
		if(e.getInventory().getName() == "§6§lDrop serwerowy"){
			if(e.getCurrentItem().getItemMeta().getDisplayName().contains("§7§lDrop ze stone")){
				p.performCommand("stone0010");
				e.setCancelled(true);
			}
			if(e.getCurrentItem().getItemMeta().getDisplayName().contains(" ")){
				e.setCancelled(true);
			}
			if(e.getCurrentItem().getItemMeta().getDisplayName().contains("§7§lDrop ze StoneCase")){
				e.setCancelled(true);
			
			}
			if(e.getCurrentItem().getItemMeta().getDisplayName().contains("§7§lDrop z §6§lPREMIUM§b§lCASE")){
				e.setCancelled(true);
			}
			if(e.getCurrentItem().getItemMeta().getDisplayName().contains("§7§lDrop z cobblex")){
				e.setCancelled(true);
			}
		if(e.getInventory().getName() == "§5§lDrop ze stone'a"){
			if(e.getCurrentItem().getItemMeta().getDisplayName().contains("§7§lStoneCase")){
				e.setCancelled(true);
			}
			if(e.getCurrentItem().getItemMeta().getDisplayName().contains("§4§l§oPOWROT")){
				p.performCommand("drop");
				e.setCancelled(true);
			}	
			if(e.getCurrentItem().getItemMeta().getDisplayName().contains(" ")){
				e.setCancelled(true);
				}
			}
		}
		return;
	
	}
	ItemStack stone = new ItemStack(Material.STONE, 1);{
		ItemMeta stoneim = stone.getItemMeta();
		ArrayList<String> stonelore = new ArrayList<String>();
		stonelore.add("§8» §7Kliknij aby zobaczyc drop ze stone");
		stoneim.setDisplayName("§7§lDrop ze stone");
		stoneim.setLore(stonelore);
		stone.setItemMeta(stoneim);
	}
	ItemStack redwool = new ItemStack(Material.WOOL, 1 ,(short) 14);{
		ItemMeta redwoolim = redwool.getItemMeta();
		ArrayList<String> redwoollore = new ArrayList<String>();
		redwoollore.add("§8» §7Powrot do menu glownego");
		redwoolim.setDisplayName("§4§l§oPOWROT");
		redwoolim.setLore(redwoollore);
		redwool.setItemMeta(redwoolim);
	}
	ItemStack stonedrop = new ItemStack(Material.CHEST, 1);{
		ItemMeta stonedropim = stonedrop.getItemMeta();
		ArrayList<String> stonedroplore = new ArrayList<String>();
		stonedroplore.add("§9» §2Szansa: §a1% §8(§eVIP §6+0.5%§8)");
		stonedroplore.add("§9» §2Wykopiesz go: §aKazdym kilofem");
		stonedroplore.add("§9» §2Dropi z: §astone");
		stonedroplore.add("   §a§l§oDROPU NIE DA SIE WYLACZYC!");
		stonedropim.setDisplayName("§7§lStoneCase");
		stonedropim.setLore(stonedroplore);
		stonedrop.setItemMeta(stonedropim);
	}	
	ItemStack blank = new ItemStack(Material.STAINED_GLASS_PANE, 1, (short) 15);{
		ItemMeta blankim = blank.getItemMeta();
		blankim.setDisplayName(" ");
		blank.setItemMeta(blankim);
		
	}
	ItemStack stonecase = new ItemStack(Material.CHEST, 1);{
		ItemMeta stonecaseim = stonecase.getItemMeta();
		ArrayList<String> stonecaselore = new ArrayList<String>();
		stonecaseim.setDisplayName("§7§lDrop ze StoneCase");
		stonecaseim.setLore(stonecaselore);
		stonecaselore.add("§8» §7Kliknij aby zobaczyc drop ze StoneCase");
		stonecase.setItemMeta(stonecaseim);
		
	}

	ItemStack premiumcase = new ItemStack(Material.CHEST, 1);{
		ItemMeta premiumcaseim = premiumcase.getItemMeta();
		ArrayList<String> premiumlore = new ArrayList<String>();
		premiumlore.add(" §8» §7Kliknij aby zobaczyc drop z PremiumCase'a");
		premiumcaseim.setLore(premiumlore);
		premiumcaseim.setDisplayName("§7§lDrop z §6§lPREMIUM§b§lCASE");
		premiumcase.setItemMeta(premiumcaseim);
	}
	ItemStack cobblex = new ItemStack(Material.MOSSY_COBBLESTONE, 1);{
		ItemMeta cobblexim = cobblex.getItemMeta();
		ArrayList<String> cobblexlore = new ArrayList<String>();
		cobblexlore.add(" §8» §7Kliknij aby zobaczyc drop z cobblex");
		cobblexim.setLore(cobblexlore);
		cobblexim.setDisplayName("§7§lDrop z cobblex");
		cobblex.setItemMeta(cobblexim);
	}

}

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