Create an extension and insert a placeholder JS file into it with this content:
Code:
function callCTAClick() {
FbPlayableAd.onCTAClick();
}
Then add a function to that file named
callCTAClick (
read this if you don't know what I mean by that), and run
callCTAClick(); in GML when the call-to-action triggers.
Next time, learn some basic JS and extension development before attempting to use the HTML5 export commercially. The cavalry won't be coming.