Code on metabox.config.php file
array(
'id' => 'car_year_lists_x',
'type' => 'group',
'title' => 'Year Data',
'desc' => 'Add Availibility For Cars',
'button_title' => 'Add New Year',
'fields' => array(
array(
'id' => 'mb_car_year_details_av',
'type' => 'text',
'title' => 'Car Model & Year',
),
),
),
NOW CODE ON THE OUTPUT PHP FILE
<?php
$meta_data = get_post_meta( $post->ID, 'mbhouse_project_meta', true );
$meta_groups = ( ! empty( $meta_data['car_year_lists_x'] ) ) ? $meta_data['car_year_lists_x'] : '';
?>
<?php if( !empty($meta_groups) ): ?>
<pre>
<?php foreach($meta_groups as $meta_group): ?>
<?php echo $meta_group[ 'mb_car_year_details_av' ]; ?>
<?php endforeach; ?>
</pre>
<?php endif; ?>