public function changeSlidePosition($old_position = '', $new_position = '', $storageName = '', $folder = '')
    {
        if ($old_position == '' || $new_position == '')
            throw new Exception('Missing Required Params');


        $strURI = Product::$baseProductUri . '/slides/' . $this->getFileName() . '/slides?OldPosition=' . $old_position . '&NewPosition=' . $new_position;
        if ($folder != '') {
            $strURI .= 'folder=' . $folder;
        }

        if ($storageName != '') {
            $strURI .= '&storage=' . $storageName;
        }
        $signedURI = Utils::sign($strURI);

        $responseStream = Utils::processCommand($signedURI, 'POST', '', '');
        $json = json_decode($responseStream);


        if ($json->Code == 200)
            return $json->Slides;
        else
            return false;
    }