function fix_htmlLongText($error, $opt, &$msg)
 {
     $_this =& NewsletterUpgrade::getInstance();
     $db =& ConnectionManager::getDataSource($_this->connection);
     foreach ($error as $table => $field) {
         $query = 'ALTER TABLE  `' . $table . '` CHANGE  `' . $field . '`  `' . $field . '` LONGTEXT CHARACTER SET utf8 COLLATE utf8_unicode_ci NULL DEFAULT NULL;';
         //debug($query);
         if (!$db->execute($query)) {
             $msg = __('Unable to execute query :', true) . ' ' . $query;
             return false;
         }
     }
     return true;
 }