Adding coding to the contact enquiry 'THANKYOU' page - please help

Site URL: https://www.vanquishbrisbane.com.au/contact

Please help! 

The marketing company needs to track the Facebook referrals. So they need me to inject coding into the 'Thankyou' page once someone has filled out the contact us form. I can't work out where I access this particular page. I managed to inject coding into the Landing page. If anyone can offer help it would be SINCERELY appreciated.

Thanks all

Hi @vanquishbrisbane, 

Instead of using the Post-submit message option on the form block, you'll want to use a post-submit redirect (under Edit Form > Advanced) to send them to a new Thank You page you've created. Then you can add the code to that new page.