WPAlchemy: Modify cloned item of repeating field group

dates-meta.php

<a style="float:right; margin:0 10px;" href="#" class="dodelete-dates button">Remove All Dates</a>

<p>Add dates on which this course will run.</p>

<?php while($mb->have_fields_and_multi('dates')): ?>
<?php $mb->the_group_open(); ?>

        <?php $mb->the_field('date'); ?>
        <p><input type="text" name="<?php $mb->the_name(); ?>" value="<?php $mb->the_value(); ?>" class="datepicker" />
        <a href="#" class="dodelete button">Remove Date</a></p>

<?php $mb->the_group_close(); ?>
<?php endwhile; ?>

<p style="margin-bottom:15px; padding-top:5px;"><a href="#" class="docopy-dates button">Add Date</a></p>

<script type="text/javascript">
//<![CDATA[

jQuery(function($) {
        $.wpalchemy.bind('wpa_copy', function(e, the_clone) {
                $('.datepicker', the_clone).css('display','none');
                //console.log(the_clone);
        });
});

//]]>
</script>