How to add total price above the confirmation button

[kubo12312]

In order form I want to have total price above the button of order confirmation. So, in the order-payment.tpl I added those lines:

<div class="total_price_down">
   <p>{l s='Total:' mod='onepagecheckout'}</p>
    {if $use_taxes}
            <p id="total_price" style="color: #333; text-transform: none;">{displayPrice price=$total_price}</p>
            {else}
                <p id="total_price" style="color: #333; text-transform: none;">{displayPrice price=$total_price_without_tax}</p>
            {/if}
</div>

but there is problem. When I change shipping method from paid to free it does not change the price. 

 

Thank you for your help. 

I have Prestashop 1.6.0.9