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<?php
//do not copy the above opening php tag

/**
 * Conditionally Change Sidebar in Genesis whilst using Simple Sidebars
 * 
 * @package   Genesis Simple Sidebar on Custom Post Type
 * @author    Neil Gee
 * @link      http://wpbeaches.com/set-sidebar-custom-post-type-genesis/
 * @copyright (c) 2014, Neil Gee
 */
 
function themeprefix_remove_default_sidebar() {
	if ( get_post_type() == 'listing' ) { //set CPT here
		remove_action( 'genesis_sidebar', 'ss_do_sidebar' );
		remove_action( 'genesis_sidebar', 'genesis_do_sidebar' );
		add_action( 'genesis_sidebar', 'themeprefix_add_cpt_sidebar' );
	 }
 }

 //Alternative Sidebar 
function themeprefix_add_cpt_sidebar() { 
	dynamic_sidebar( 'sidebar-listing' ); //add in the sidebar name
 }

add_action( 'genesis_before_sidebar_widget_area', 'themeprefix_remove_default_sidebar' ); //sets the ball rolling