public function render(Varien_Object $row)
 {
     if (!($data = Mage::registry('custom_attribute_option_value'))) {
         $optionCollection = Mage::getResourceModel('eav/entity_attribute_option_collection')->setAttributeFilter('159')->setPositionOrder('desc', true)->load();
         foreach ($optionCollection as $option) {
             $data[$option->getOptionId()] = $option->getValue();
         }
         Mage::register('custom_attribute_option_value', $data);
     }
     if (isset($data[$row->getOrderTypeCode()])) {
         return $data[$row->getOrderTypeCode()];
     }
 }