Flash Cc Html5 Ought To Be Simple Gotoandplay

I'm creating an Javascript/HTML5-game in Flash CC. I have an Info-screen with a button. This Infoscreen is a movieclip from the library with a linkname 'CloseBtn'. The following sc

Solution 1:

Problem solved!

The solution is the keyword "this" before the button when assigning the eventListener. Took me about 8 hours of frustrated code analysis to find out.

this.closeBtn.addEventListener("click", function (event)
    {
        this.gotoAndPlay(9);    
    });