Change the number of similar products in WooCommerce

WooCommerce displays similar products below the product description. The number can be set with the following code:

add_filter( 'woocommerce_output_related_products_args', 'iphf_change_number_related_products', 10 );
function iphf_change_number_related_products( $args ) {
	$args['posts_per_page'] = 5; // Anzahl der ähnlichen Produkte
	$args['columns'] = 5; // Anzahl der Produkte pro Zeile
	return $args;
}