Hey @qwik3r – Thank you very much for your message, as well as for your interest in our plugin.
I’m afraid we do not have a predefined webhook trigger available for that use-case, but you can still make it work using the “Custom Action” webhook trigger.
This trigger allows you to fire an event wherever within your PHP code. In combination with a few lines of code, you can check on the post_updated hook (https://developer.wordpress.org/reference/hooks/post_updated/) if the meta value was updated and if so, you can fire that custom trigger.
Do let me know in case you have any further questions.
