Yes, the postMessage() allows you to send any string from the IFRAME to the parent, so it's up to you to decide how you want to structure that string with the required values that you want. A JSON sting might be the easiest, simplest format to use.In Launch, you can detect a postMessage() by using a "Custom Code" event. In that Custom Code, use this:window.addEventListener('message', function(event) { if (event.origin === 'www.iframe-domain.com') { trigger(); } });You can then use your postMessa...