Hi,
We have a documentation which explains how you can create your own plugin with our API: 
	www.hikashop.com/en/support/documentatio...r-documentation.html
You will be able to use the event onAfterOrderUpdate(&$order,&$send_email) to know when an order is updated.
There, you can have something like this:
$config=&hikashop::config();
		$confirmed = $config->get('order_confirmed_status');
		//if order status is not updated skip
		if(!isset($order->order_status)) return true;
		
		$mainframe =& JFactory::getApplication();
		$db =& JFactory::getDBO();
		
		if($order->order_status!=$confirmed){
			return true;
		}
		//The order is confirmed, select all items from this order
		$db->setQuery('SELECT a.order_product_code as product, a.order_product_quantity as quantity FROM `#__hikashop_order_product` as a WHERE a.order_id = '.(int) $order->order_id);
		$allProducts = $db->loadObjectList();
		//your code which do something with the products information