wpalchemy metabox with "loop"

zachsMbProblem

<div class="my_meta_control">
     
            <?php $mb->the_field('assoc_proj'); ?>
            <p style="margin:2px 0;">
                <span style="float:left">What Project is this case study associated with?</span><br />
                <select name="<?php $mb->the_name(); ?>">
                    <?php
                    $selected = ' selected="selected"';
                    global $post;
                    $args = array( 'post_type' => 'projects', 'posts_per_page' => 200 );
                    $custom_posts = get_posts($args);
                    foreach($custom_posts as $post) : setup_postdata($post);
                        echo '<option value="' . get_the_id() . '"';
                        if ($mb->get_the_value() == get_the_id() ) echo $selected;
                        echo '>' . get_the_title() . '</option>' . "\n";
                    endforeach;
                    ?>
                </select>
            </p>

    
    <p style="margin-bottom:15px; padding-top:5px;">
        <input type="submit" class="button" name="save" value="Save" />
    </p>         
    
</div>