install.xml

<modification>  
  <code>Robokassa</code>
  <name>Robokassa opencart</name>
  <version>1.0.0</version>
  <author>Robokassa</author>
  <link>https://robokassa.com</link>
  <file path="catalog/controller/api/order.php">
    <operation>
        <search><![CDATA[$this->model_checkout_order->addOrderHistory($order_id, $this->request->post['order_status_id'], $this->request->post['comment'], $this->request->post['notify'], $this->request->post['override']);]]></search>
		<!-- подключение виджета карты в страницу заказа -->
        <add position="before"><![CDATA[
			/* Робокасса */
			if($order_info['order_status_id'] != $this->request->post['order_status_id'] && $order_info['payment_code'] == 'robokassa' && $this->request->post['order_status_id'] == $this->config->get('payment_robokassa_order_status_id_2check') && $this->config->get('payment_robokassa_fiscal') == 1){
				$this->load->model('extension/payment/robokassa');
					
				$this->model_extension_payment_robokassa->sendSecondCheck($order_id);
			}
			/* Робокасса */
        ]]></add>
    </operation>
  </file>
</modification>