Хук перед добавлением заказа в БД

Core_Event::attach('Shop_Order.onBeforeAdd', array('Shop_Order_Observer', 'onBeforeAdd'));

<?php
class Shop_Order_Observer
{
    static public function onBeforeAdd($object, $args)
    {
        echo $object;
        die();
    }
}

class Shop_Order_Observer
{
    static public function onAfterProcessOrder($object, $args)
    {
      $oShop_Order = $object->getShopOrder(); //$oShop_Order

      // Создаем товар заказа
      $oShop_Order_Item = Core_Entity::factory('Shop_Order_Item');
      $oShop_Order_Item->name = 'Установка оборудования';
      $oShop_Order_Item->quantity = 1;
      $oShop_Order_Item->price = 200;
      $oShop_Order_Item->type = 0;

      // Добавляем в заказ
      $oShop_Order->add($oShop_Order_Item);
    }
}

Core_Event::attach('Shop_Payment_System_Handler.onAfterProcessOrder', array('Shop_Order_Observer', 'onAfterProcessOrder'));