Call to a possibly undefined method removeMovieClip and createEmptyMovieClip.

Hi All,

I face the error while designing a Progress bar.

Error at this line of code(highlighted in RED😞

function clearCircles(circleArray:Array) {

                                        for(var i:Number = circleArray.length - 1; i >= 0; i--){

removeMovieClip(circleArray.pop());

                                        }

                                        //onEnterFrame = null;

                                        root.addEventListener(Event.ENTER_FRAME,null);

                              }

and

for (i = 0; i < numCircles; i++) {

                                                  circles.push(createEmptyMovieClip('circle' + i, i));

                                                  drawCircle(circles,4,0x99FF00,100);

                                                  circles._x = centerX + Math.sin(radians * i) * radius;

                                                  circles._y = centerY + Math.cos(radians * i) * radius;

                                                  circles._alpha = i * (100 / numCircles);

                                        }

Could you please help me with this?