How to send data on an order after placing it in Bitrix?

Question

1C-Bitrix

I want information about this order to be sent to the delivery service after placing an order, but how can I do this? I'm trying to send via this:

use Bitrix\Main; 
Main\EventManager::getInstance()->addEventHandler(
    'sale',
    'OnSaleOrderSaved',
    'sendOrder'
);

function sendOrder(Main\Event $event)
{
    /** @var Order $order */
    $order = $event->getParameter("ENTITY");
    $oldValues = $event->getParameter("VALUES");
    $isNew = $event->getParameter("IS_NEW");

    if ($isNew)
    {
        var_dump($order);
    }
}

But the function doesn't work, what's the problem?

Answer 1

try dumping to a file