Add particles from an Array inside to a MovieClip

programming flash
1 

var myArray:Array = new Array();

for(var i=0; i<10; i++){

var p:Particle = new Particle();

p.x = Math.random() * 250;
p.y = Math.random() * 250;
addChild(p);

myArray.push(p);
}

Hi,

I have this array of particles and I was wondering how can I add this particles inside a movieClip, in other
words I would like to add particle “p” to a movieClip that I have on the stage with an instance name of “mainMC”.

Also, is it possible to display the number of particles § inside mainMC in a text field? On this case I know it will be 10, but this will change.

Can some be so kind and show me how to do this?

Thanks a lot!