Animate CC/HTML5: Movieclip not going to frame label

[trial]

Hello, I'm using Animate CC. I'm trying to get a movieclip placed in the beginning of the timeline to load to a frame label. I used this code but it doesn't seem to work:

this.movieClip_mc.gotoAndStop("start");

I was thinking maybe the code loads first before the movieclip, that's why it's not being fired?

[trial]

This code worked for me to change the movieclip to the frame label that I wanted:

stage.on("goToFrameLabel", initAllFrameMCs, this, true);

function initAllFrameMCs() {
	this.movieClip_mc.gotoAndStop("start");
}