Edge Animate CC :: Clicking Twice On Pause / Play Button

I have made a pause and a play button to my slideshow.The pause button is just a boks with the click-action code:
 
sym.$('btn').click(function(){
          sym.stop();
});
 
The pause button is a boks with the click-action code:
 
sym.$('btnPlay').click(function(){
var timelinePos = sym.getPosition();
          sym.play(timelinePos);
});
 
It works but in the beginning, I have to click twice before the function works. It is only the first time. After that everything works fine.