You can already define all the links for your Lightbox second state in the HTML5 file, but it is possible to add a global click action in Campaign Manager as well.
If you want to add a global click action for your Lightbox ad, then you need to modify your HTML5 file accordingly by inserting this code snippet:
window.addEventListener("message", function(e) {
if (e.data.clickTag) {
window.clickTag = e.data.clickTag;
}
});
Why this is needed:
The second state is shown through iframe and the source is our domain, but since the ad domain is where the ad is being shown, there will be a security error called “CORS”, which prevents stealing information through iframes. Information can still be shared by using message events between frames.