Total details in pdf invoice

Hi all,
in my custom pdf template I replaced default totals

<?php foreach( $wpo_wcpdf->get_woocommerce_totals() as $key => $total ) : ?>
<tr class=”<?php echo $key; ?>”>
<td class=”no-borders”> </td>
<th class=”description”><?php echo $total[‘label’]; ?></th>
<td class=”price”><span class=”totals-price”><?php echo $total[‘value’]; ?></span></td>
</tr>
<?php endforeach; ?>

with

<tr>
<td class=”no-borders”> </td>
<th class=”description”>Total</th>
<td class=”price”><span class=”totals-price”><?php $woocommerce_totals = $wpo_wcpdf->get_woocommerce_totals(); echo $woocommerce_totals[‘order_total’][‘value’]; ?></span></td>
</tr>

in this way I can have only Total order showed. OK

I need other two rows wit “Total Without Tax” and “Total Tax”

Can someone help me please?

Thanks in advance