How to insert order number into script in miniShop2?

Question

MODX

How to insert an order number into the conversion tracking script in miniShop2 in MODx?
I tried this: I
inserted a script in the head of the successful checkout template

[[!msOrder?
    &tpl = `
        <!-- Event snippet for Покупка conversion page -->
        <script>
            gtag('event', 'conversion', {
                'send_to': 'AW-731837584/YoJmCLz0kaUBEJDp-9wC',
                'transaction_id': '{$order.num}'
            });
        </script>`
]]

The script is displayed on the page, however, the order number in 'transaction_id': is not substituted. How to fix?

Answer 1

Why call $order.num and not just num?