public function updateRow($entry, $newRowData)
    {
        $newCustomArr = array();
        foreach ($newRowData as $k => $v) {
            $newCustom = new Zend_Gdata_Spreadsheets_Extension_Custom();
            $newCustom->setText($v)->setColumnName($k);
            $newCustomArr[] = $newCustom;
        }
        $entry->setCustom($newCustomArr);

        return $entry->save();
    }