Products page images loop

Hi,
How can I activate loop slider on products page.
I try this code in child-theme functions but dos not work:

function woodmart_get_owl_items_numbers( $slides_per_view, $post_type = false, $custom_sizes = false ) {
		$items = array(
		    loop => true,
			//'desktop' => $slides_per_view,
			//'tablet' => 4,
			//'tablet_landscape' => 3,
			//'mobile' => 2,
		);
		//if ( $post_type == 'product' ) {
			//$items['mobile'] = woodmart_get_opt( 'products_columns_mobile' );
		//}
		return $items;
	}