Gallery Metabox – show images marked “include in rotator”

/**
 * Only show images marked as Include in Rotator
 * @author Bill Erickson
 * @link http://www.wordpress.org/extend/plugins/gallery-metabox
 *
 * @param array query $args
 * @return array query $args
 */
function be_gallery_custom_args( $args ) {
	$args['meta_query'] = array(
		array(
			'key' => 'be_rotator_include',
			'value' => '1'
		)
	);
	return $args;
}
add_filter( 'be_gallery_metabox_args', 'be_gallery_custom_args' );