comment insérer un code de tracking twenga sur virtuemart

Je pense mettre sur le fichier
/components/com_virtuemart/themes/default/templates/checkout/get_final_confirmation.tpl.php ?

le code de track suivant ? suis-je dans le vrai ?

<script language="javascript" type="text/javascript" src="tracker.twenga.fr/ID_TWENGA"></script>
<script language="javascript" type="text/javascript">
var track = new twengaTrack();
track.totalHT = "";
track.currency = "";
track.totalTTC = "";
track.shipping = "";
track.tax = "19.6";
track.tva= "";
track.orderId= "";
track.basketId= "";
track.userId= "";
track.cli_email= "";
track.cli_firstname= "";
track.cli_lastname= "";
track.cli_city= "";
track.cli_state= "";
track.cli_country= "";
track.cli_segment= "";
track.payment_method= "";
track.Master_Account_ID= "";
track.twNewOrder();

track.itemPriceHT= "";
track.itemQuantity= "";
track.itemSku= "";
track.itemName= "";
track.itemCategoryName= "";
track.twAddItem();

track.twSend();
</script>