woocommerce php product gallery change to carousel

1add_filter( 'woocommerce_single_product_carousel_options', 'cuswoo_update_woo_flexslider_options' );
2/** 
3 * Filer WooCommerce Flexslider options - Add Navigation Arrows
4 */
5function cuswoo_update_woo_flexslider_options( $options ) {
6
7    $options['directionNav'] = true;
8
9    return $options;
10}
11