[ClassiPress] Change quantity of featured ads displayed in slider

functions.php

<?php

/**
 * Change quantity of featured ads displayed in slider.
 *
 * @param array $args
 *
 * @return array
 */
function childtheme_gimme_more_featured_ads( $args ) {

	// default value is 15
	$args['posts_per_page'] = 23;

	return $args;
}
add_filter( 'cp_featured_slider_args', 'childtheme_gimme_more_featured_ads', 10, 1 );