Mob Spawner Type

why this doesnt work?:

Code:

if(args.length <= 1) {
            p.sendMessage("§cBitte benutze: /spawner <anzahl> <type>");
        } else if(args.length == 2) {
            EntityType type = EntityType.valueOf(args[1].toUpperCase());
            if (type != null) {
            ItemStack item = getSpawnerItem(Integer.valueOf(args[0]).intValue(), type);
            p.getInventory().addItem(new ItemStack[] { item });
            } else {
                p.sendMessage("§cUnbekanntes Entity: " + args[0]);
            }
        } else {
            p.sendMessage("§cBitte benutze: /spawner <anzahl> <type>");
        }
 
private ItemStack getSpawnerItem(int amount, EntityType type) {
 
ItemStack item = new ItemStack(Material.MOB_SPAWNER, amount);
   List lore = new ArrayList();
 
   String loreString = type.toString();
   loreString = type.getName() + " Spawner";
   lore.add(loreString);
 
   ItemMeta meta = item.getItemMeta();
   meta.setLore(lore);
   item.setItemMeta(meta);
 
return item;
}

 

I don't know if you can actually change the spawner type in the itemstack but you can when the spawner is placed, set the entity type based on the lore...
http://jd.bukkit.org/rb/doxygen/dc/ddd/interfaceorg_1_1bukkit_1_1block_1_1CreatureSpawner.html