Facebook Tracking Pixel

Hello, All!

We are on TNEW and one of our clients wants to add a Facebook tracking pixel to the confirmation page:

<script>

  fbq('track', 'Purchase');

</script>

Tessitura says this must be entered in Google Tag Manager, but my web developer says NO:

"We are not asking to use Google Tag Manager or Google Analytics.  We are asking to place a code snippet from a 3^rd-party onto the “thank you” page (post-sale).

The single line of JavaScript code that was requested by is:

<script>

  fbq('track', 'Purchase');

</script>

This is a script from Facebook (NOT Google), which interfaces with an existing Facebook pixel we have already installed on our side.

If I am missing something, I would like to understand. I’m not currently aware of how to use Google Tag Manager to load Facebook Pixel script"

Am I missing something? Is this code added to a system table in Tessitura? As you can see I have limited understanding of this process, and I am failing to communicate properly. Please advise if you are able!

Thanks!