Hi,
You will have to do a plugin for that.
Based on the function "onAfterCartShippingLoad()", create an object like that:
if(isset($cart->order_currency_id))
$currency_id = $cart->order_currency_id;
else
$currency_id = hikashop_getCurrency();
$wrap = new stdClass();
$wrap->name = 'WRAP_ARTICLE';
$wrap->value = '';
$wrap->price_currency_id = $currency_id;
$wrap->price_value = 1;
$wrap->price_value_with_tax = 1;
$cart->additional['wrap'] = $wrap;
if the checkox is checked, you can verify that in the "$cart" object in the function.
You can see how it's working in the "plugins/hikashoppayment/userpoints/userpoints.php" file.
Here is some developer documentation:
hikashop.com/support/support/documentati...r-documentation.html