/**
  * Return value of a field from layout_def
  * @param mixed $layout_def
  * @return string
  */
 function _get_list_value(&$layout_def)
 {
     $value = parent::_get_list_value($layout_def);
     if (!empty($value) && isset($this->reporter->all_fields[$layout_def['column_key']]['options'])) {
         $app_list_strings = return_app_list_strings_language($GLOBALS['current_language']);
         $value = $app_list_strings[$this->reporter->all_fields[$layout_def['column_key']]['options']][$value];
     }
     return $value;
 }