how to avoid dynamic textField overlapping createjs

we fix this issue in as3 using  var hitBool:Boolean

but createjs does not support Boolean  ; so how can we fix the issue ? LOL

/* js

var score=0;

var hitBool=false;

this.movieClip_1.addEventListener('click', fl_MouseOverHandler_2);

function fl_MouseOverHandler_2(e)

{

  if(!hitBool){

hitBool=false;

  text1 = new createjs.Text("LIVES: " + score, "40px Arial");

text1.textAlign = 'right';

text1.y = 30;

text1.x = stage.canvas.width - 10;

stage.addChild(text1);

  score=score+10;

  text1.text=String(score);

}

}