need to display php variables in php

[ouldfella]

hello,

i executed the callback fille of the gateway in new page

<?php
use WHMCS\ClientArea;
use WHMCS\Database\Capsule;
define('CLIENTAREA', true);
require __DIR__ . '/init.php';
$ca = new ClientArea();
$ca->setPageTitle('Your Page Title Goes Here');
$ca->addToBreadCrumb('index.php', Lang::trans('globalsystemname'));
$ca->addToBreadCrumb('mypage.php', 'Your Custom Page Name');
$ca->initPage();
require __DIR__ . '/modules/gateways/callback/gatewaysatimmodule.php';

......

it works,

and i collect informations in variables from gateway callbak fille like( errorcode ,  ErrorMessage,  depositAmount,  cardholderName,...)

i need to display this varibles in tpl (mypage.tpl)

i created a hook but doesn't work :

<?php
function satim_confirm_vars($vars) {
    $extraTemplateVariables = array();
//$resultConfirm variable filled in callback file
    $extraTemplateVariables['resultConfirm'] = $resultConfirm;
    $extraTemplateVariables['orderId'] = $orderId;

    $extraTemplateVariables['invoiceId'] = vars['invoiceId'];
    return $extraTemplateVariables;
}

add_hook('AddInvoicePayment', 1, 'satim_confirm_vars');

in tpl i can't display it

[ouldfella]

can someone help me ?