cashondeliveryplus hook

[tozi]

Hi all, i have presta 1.5.6.1.

 

I need in order-payment.tpl show for one carrier display only cashondelivery.

 

i tried this code. 

 

{if isset($cart->id_carrier) && $cart->id_carrier == 38}
  <div id="HOOK_TOP_PAYMENT">{$HOOK_TOP_PAYMENT}</div>
{else}


{if $HOOK_PAYMENT}

	{if $opc}<div id="opc_payment_methods-content">{/if}
		<div id="HOOK_PAYMENT">{$HOOK_PAYMENT}</div>
	{if $opc}</div>{/if}
{else}
	<p class="warning">{l s='No payment modules have been installed.'}</p>
{/if}
{/if}

But how can i hook this module in this hook?

In module i tried this

function HOOK_TOP_PAYMENT($params) {
		return $this->payment($params, 'HOOK_TOP_PAYMENT');
	}

But nothing happend.

 

Please help.