metaboxes.php

<?php

add_filter( 'cmb_meta_boxes' , 'be_metaboxes' );
/**
 * Create Metaboxes
 *
 * @link http://www.billerickson.net/wordpress-metaboxes/
 *
 */

function be_metaboxes( $meta_boxes ) {
	$meta_boxes[] = array(
		'id' => 'be-cat-2',
		'title' => 'Category 2 Information',
		'pages' => array('post'), 
		'show_on' => array( 
			'key' => 'taxonomy', 
			'value' => array( 
				'category' => 'cat-2', 
				'rotator-location' => array( 'location-1', 'location-3' ) 
			) 
		),
		'context' => 'normal',
		'priority' => 'high',
		'show_names' => true, 
		'fields' => array(
			array(
		        'name' => 'Subtitle',
		        'desc' => '',
	    	    'id' => 'be_post_subtitle',
	        	'type' => 'text'
			),
		),
	);
	
	return $meta_boxes;
 }

I am using standard categories, not work for me, please suggest.