Using table within Group field type

I am trying to use Advanced Custom Fields: Table Field within a Group field type. To show other group items i am using this:

// vars
$zone_4 = get_field('zone_4');

if( $zone_4 ): ?>
<div id="zone_4" style="margin: 0 -9999rem; padding: 0.25rem 9999rem; background: url(<?php echo $zone_4['background_image']; ?>); background-repeat: no repeat; background-attachment: fixed; background-position: center; background-repeat: no-repeat; background-size: cover; height: 432px; overflow: hidden;">
	<div style="text-align:center;"><img src="<?php echo $zone_4['image']; ?>" /></div>
	<h1 style="text-align:center;"><?php echo $zone_4['header']; ?></h1>
	<div><p><?php echo $zone_4['content']; ?></p></div>
<div>

I now want to show the table and I am using:

<?php

$table = get_field( 'table' );

if ( $table ) {

    echo '<table border="0">';

        if ( $table['header'] ) {

            echo '<thead>';

                echo '<tr>';

                    foreach ( $table['header'] as $th ) {

                        echo '<th>';
                            echo $th['c'];
                        echo '</th>';
                    }

                echo '</tr>';

            echo '</thead>';
        }

        echo '<tbody>';

            foreach ( $table['body'] as $tr ) {

                echo '<tr>';

                    foreach ( $tr as $td ) {

                        echo '<td>';
                            echo $td['c'];
                        echo '</td>';
                    }

                echo '</tr>';
            }

        echo '</tbody>';

    echo '</table>';
}

?>

zone_4 is the group name and table is the sub-field name (where I am using your plugin)
I get nothing on the page and no errors Any help on how to use this within a Group field type would be appreciated.