Hi,
You'll have to load that yourself ith a MySQL query.
Something like that:
Code:
$database = JFactory::getDBO();
$query = 'SELECT * FROM ' . hikashop_table('payment') . ' WHERE payment_id = ' . (int)$this->element->order_payment_id;
$database->setQuery($query);
$this->element->payment = $database->loadObject();
