Google Analytics - add purchase on order status change

[ItsMeMarioBruh]

Hello!

I'm trying to send informations about transaction to Universal Analytics when the order status changes to specified one. It's all because of customers sometimes are not coming onto thank you page, they're closing website right after payment becomes done (external express payments provider). Used GA module is the official one provided by PrestaShop. And used Presta version is 1.6.

One of my attempts is:

	public function hookActionOrderHistoryAddAfter($params)
	{
		$orderHistory = $params['order_history'];

        $new_id_order_state = (int) $orderHistory->id_order_state;
        $id_order = $orderHistory->id_order;

		if ($new_id_order_state == 18)
		{
-- HERE BEGINS GA CODE FROM ORDER CONFIRMATION HOOK --
			$order = new Order($id_order);
			$products = $order->getProducts();

			if (Validate::isLoadedObject($order) && $order->getCurrentState() != (int)Configuration::get('PS_OS_ERROR'))
			{
				$ga_order_sent = Db::getInstance()->getValue('SELECT id_order FROM `'._DB_PREFIX_.'ganalytics` WHERE id_order = '.(int)$order->id);
				if ($ga_order_sent === false)
				{
					Db::getInstance()->Execute('INSERT INTO `'._DB_PREFIX_.'ganalytics` (id_order, id_shop, sent, date_add) VALUES ('.(int)$order->id.', '.(int)$this->context->shop->id.', 0, NOW())');
					if ($order->id_customer == $this->context->cookie->id_customer)
					{
						$order_products = array();
						$cart = new Cart($order->id_cart);
						foreach ($cart->getProducts() as $order_product)
							$order_products[] = $this->wrapProduct($order_product, array(), 0, true);

						$transaction = array(
							'id' => $order->id,
							'affiliation' => (version_compare(_PS_VERSION_, '1.5', '>=') && Shop::isFeatureActive()) ? $this->context->shop->name : Configuration::get('PS_SHOP_NAME'),
							'revenue' => $order->total_paid,
							'shipping' => $order->total_shipping,
							'tax' => $order->total_paid_tax_incl - $order->total_paid_tax_excl,
							'url' => $this->context->link->getModuleLink('ganalytics', 'ajax', array(), true),
							'customer' => $order->id_customer);
						$ga_scripts = $this->addTransaction($order_products, $transaction);

						$this->js_state = 1;
						return $this->_runJs($ga_scripts);
					}
				}
			}
		}
	}

Of course I've properly added registerHook, reinstaled module etc.

Unfortunately, after status change, nothing happens. Orders are still missing from Analytics.