tilføj objekt i actionscript

Hejsa,

Jeg har fundet en tutorial på nettet: http://www.lionbichstudios.com/flash_tutorials_actionscript_waterbubbles.html og selve actionscriptet ser således ud:

// set global constants
centerx = 390;
// screen center x
centery = 90;
// screen center y
pval = 390;
// strength of perspective
c = 0;
// counter to keep track of depths, etc
// create empty movieclip to control stuff
this.createEmptyMovieClip("mc", 1);
// make one instance to start with.
newInst();
// onEnterFrame code for controller that randomly creates bubbles
mc.onEnterFrame = function() {
    // chance of 1 in 100 that new instance is created.
    if (Math.floor(100*Math.random()) == 0) {
        newInst();
    }
    // increase counter 
    c++;
};
// function to create new instance and attach event scripts
function newInst() {
    this.attachMovie("bubble", "b"+c, c+10);
   
    this["b"+c].onLoad = function() {
        // hide the bubble for now
        this._visible = false;
        // set initial values
        this.bx = 300*Math.random()-150;
        // base x coord for sine
        this.y = 75;
        // initial y coord
        this.bz = 300*Math.random()-150;
        // base z coord for sine
        this.cnt = 5000*(2*Math.PI)*Math.random();
        // randomize counter for sine
        this.wl = 8;
        // wavelength for sine calculations
        this.amp = 120;
        // amplitude for sine wave
        this.ysp = -1;
        // speed y direction (minus for upward motion)
    };
    // start the onLoad script manually
    this["b"+c].onLoad();
    // the onEnterFrame code moves the bubble
    this["b"+c].onEnterFrame = function() {
        // change the x,y,z coords
        this.x = this.bx+(this.amp*Math.sin(this.cnt/this.wl));
        this.y += this.ysp;
        this.z = this.bz+((this.amp/2)*Math.sin(this.cnt/this.wl));
        // increase counter on which sin and cosine are based
        this.cnt += 0.05;
        // call the function that applies 3d effects to this bubble
        m3d(this, this.x, this.y, this.z);
        // check whether this instance is off screen, if so delete it
        if (this._y<-150) {
            this.removeMovieClip();
        }
        // now that it's in place, let show the bubble 
        this._visible = true;
    };
}
// this function does the 3d stuff
function m3d(obj, x, y, z) {
    // calculate perspective value
    ps = _root.pval/(_root.pval+z);
    // change the object's properties
    with (obj) {
        // set 2d coords
        _x = centerx+(obj.x*ps);
        _y = centery+(obj.y*ps);
        // set scale and alpha
        _xscale = 100-(z/2);
        _yscale = 100-(z/2);
        _alpha = 100-(z/2);
    }
}


Men jeg vil gerne tilføje nogle flere objekter, altså, så jeg har flere forskellige bobler som svæver op - men hvordan gør jeg det?

På forhånd tak for hjælpen!