WPAlchemy, dynamically create check boxes from custom posts titles

I’m using WPAlchemy, What I’m trying to do is have check boxes with labels from a custom post type posts.

In other words, is it possible to replace ‘a’, ‘b’, ‘c’ in the array with the titles?

<?php $items = array('a', 'b', 'c'); ?>

	<?php while ($mb->have_fields('cb_ex', count($items))): ?>

		<?php $item = $items[$mb->get_the_index()]; ?>

		<input type="checkbox" name="<?php $mb->the_name(); ?>" value="<?php echo $item; ?>"<?php $mb->the_checkbox_state($item); ?>/> <?php echo $item; ?><br/>

	<?php endwhile; ?>