I currently have a static thank you page where I intend for all registrants for past webinars to get re-directed to.

Problem is, I would like the thank you page to show a different lightbox pop-up (that contains the respective Youtube video) depending on which webinar landing page the user came from.

For instance,

If a user registers to watch a past October 4th Webinar, he/she gets redirected to the thank you page where a lightbox pop-up comes up showing the October 4th Webinar recording.

Similarly, if a user registers to watch a past September 20th Webinar, he/she gets directed to the thank you page where a lightbox pop-up comes up showing the September 20th Webinar recording.

Would greatly appreciate any help on this!

Regards,

Dylan