Show posts from multiple categories in query using Metabox Deluxe

Metabox Deluxe Taxonomy in Query

<?php $categories = rwmb_meta( 'gt_meta_value', 'type=taxonomy&taxonomy=category' );
$cat_num = get_post_meta($post->ID, 'gt_cat_num', TRUE);
foreach ( $categories as $category ){
$cat_ids[] = $category->term_id;
}

$i = 1; 
if ( get_query_var('paged') ) {
$paged = get_query_var('paged');
} else if ( get_query_var('page') ) {
$paged = get_query_var('page');
} else {
$paged = 1;
}

query_posts( 
array( 
'showposts' => $cat_num,
'cat' => implode(",", $cat_ids),
'paged' => $paged ) );
if ( have_posts() ) : $count = 0; while ( have_posts() ) : the_post(); $count++; ?>

Stuff in loop goes here.

<?php $i++; endwhile; ?>
<?php endif; ?>