Hi Roxane,
Thank you for your purchase.

Sorry for late response. 

We are located in Serbia and our working time is from 10:00 to 17:00 CET. business days.

We don't have any hook on this button that you need.

A lot of users that require tracking from Google use  hooks like beforeConfirmedBooking that will be triggered when your customers confirm booking.(clicking on Confirm button) You can set that redirect URL that you need like on this script(we use https://www.google.com as example, but you will replace this with your own URL)

<script>
window.beforeConfirmedBooking = function()
{
window.location.href = "https://www.google.com";
};
</script>

Please insert this script on page where you insert Amelia shortcode.

For Facebook Pixel they use the same hook and then insert function provided from Facebook pixel(in your case this)

<script>
window.beforeConfirmedBooking = function()
{
fbq('track', 'Purchase');
};
</script>

Best regards.

Hi Roxane,

After clicking on confirm button it will be executed hooks that we provide to you and everything that is in it will be executed. We are not familiar with Facebook Pixel tracking program so you need to check are those conversions are trucked on Facebook or whatever where you track this conversion data.

Best regards.