Pancake App - Show Amount Due On Invoice

detailed.php

      <!-- Edit your third_party/themes/pancake/views/modules/frontend/detailed.php
          Replace the invoices total with this block.
      -->
      	<tr dontbreak="true">
	  	<td class="total-heading" style=" vertical-align:top;"><?php echo __('invoices:total');?>:</td>
		<td class="total-values" style=" vertical-align:top;"><?php echo Currency::format($invoice['total'], $invoice['currency_code']); ?></td>
	</tr>
		
	<tr dontbreak="true">
		<td class="total-heading"><?php echo __('Paid Amount');?>:</td>
		<td class="total-values"><?php echo Currency::format($invoice['paid_amount'], $invoice['currency_code']); ?></td>
	</tr>
	
	<tr dontbreak="true" class="invoice-total">
		<td class="total-heading" style=" vertical-align:top;"><?php echo __('Due');?>:</td>
		<td class="total-values" style=" vertical-align:top;"><?php echo Currency::format($invoice['unpaid_amount'], $invoice['currency_code']); ?></td>
	</tr>