Custom item in custom recipe doesn't work !

Hi !
I'm trying to create custom recipe with custom items, so I use PrepareItemCraftEvent, but with spigot 1.8, it's not working ! The event is call only when there is a specific recipe ! So how should I do ?

 

There's my code

Code:

@EventHandler(priority = EventPriority.HIGHEST)
    public void craft(PrepareItemCraftEvent e){
        if(e.getInventory().getMatrix().length < 9) return;
        ItemStack[] craft = e.getInventory().getMatrix();
        if(craft[4].getType() == Material.DIAMOND) {
            if(craft[4].getItemMeta().getDisplayName().equals("§cRuby")) {
                e.getRecipe().getResult().setType(Material.DIAMOND_BLOCK);
                //e.getInventory().setResult(new ItemStack(Material.DIAMOND_BLOCK));
            }else{
                e.getRecipe().getResult().setType(Material.AIR);
            }
        }
    }

And the event is registered !

 

Code:

if(e.getInventory().getMatrix().length < 9) return;

?
Or

Code:

if(craft[4].getType() == Material.DIAMOND) {

 

So ! This thing is working !
But when I add one if statement, it's doesn't work

Code:

@EventHandler(priority = EventPriority.HIGHEST)
    public void craft(PrepareItemCraftEvent e){
        if(e.getInventory().getMatrix().length < 9) return;
        ItemStack[] craft = e.getInventory().getMatrix();
        if(craft[4].getType() == Material.DIAMOND && craft[4].hasItemMeta()) {
            if(craft[1].getType() == Material.DIAMOND && craft[1].hasItemMeta()){
                if(craft[4].getItemMeta().getDisplayName().equals("§cRuby") && craft[4].getItemMeta().getDisplayName().equals("§cRuby")){
                    e.getInventory().setResult(ItemsUtils.getTool(Material.DIAMOND_SWORD, "§cRuby Sword", 0, 5000, "§8Weapon", "§b§lRARE"));
                } else {
                    e.getInventory().setResult(new ItemStack(Material.AIR));
                }
            }
        }
    }