HYPE library: change swarm particle size in runtime

Hi everybody, this might be a very easy qestion - but i just don't get it. I'm playing with the HYPE library and want to add a slider to change the size of my particles on runtime. I just don't find how to get down to a single particle to mess around with its values.

Somebody can help me? (Lines 129 - 139 demonstrate the problem)

` //SWARM:

import java.util.Iterator;
import hype.*;
import hype.extended.behavior.HSwarm;
import hype.extended.behavior.HTimer;
import hype.extended.behavior.HTween;
import hype.extended.colorist.HColorPool;
import hype.interfaces.HLocatable;

import controlP5.*;

HColorPool    colors;
HCanvas       canvas;
HSwarm        swarm;
HDrawablePool pool;
HTimer        timer;
int           i=0;

ControlP5 cp5;
int sliderValue = 100;
int sliderX = 450;
int sliderY = 40;
int mySize = 5;
int speed = 2;

  HPath p1 = new HPath();

void setup() {
  size(640,640);
  cp5 = new ControlP5(this);
  cp5.addSlider("speed")
     .setPosition(sliderX,sliderY)
     .setRange(0,10)
     .setValue(2)
     .setNumberOfTickMarks(10)
     ;

  cp5.addSlider("mySize")
     .setPosition(sliderX,sliderY+30)
     .setRange(0.01,0.2)
     .setValue(0.03)
     .setNumberOfTickMarks(10)
     ;

  H.init(this).background(#242424);

  colors = new HColorPool(#FFFFFF, #F7F7F7, #ECECEC, #333333, #0095a8, #00616f, #FF3300, #FF6600);

  H.add(canvas = new HCanvas()).autoClear(false).fade(400);

  swarm = new HSwarm()
    .speed(2)
    .turnEase(0.03f)
    .twitch(5)
    .idleGoal(width/2,height/2)
  ;

  //This is the target to swim to
  pool = new HDrawablePool(1);
  pool.autoAddToStage()
    .add(new HRect(10).rounding(0))
    .onCreate(
      new HCallback() {
        public void run(Object obj) {
          final HDrawable d = (HDrawable) obj;
          d
            .strokeWeight(2)
            //.stroke(#ECECEC)
            //.fill(#111111)
            .noStroke()
            .noFill()
            .loc((int)random(100,540), (int)random(100,540))
            .anchorAt(H.CENTER)
            .rotation(45)
          ;

          final HTween tween = new HTween()
            .target(d).property(H.LOCATION)
            .start(d.x(), d.y())
            .end((int)random(width), (int)random(height))
            .ease(0.01).spring(0.9)
          ;

          final HCallback onAnim = new HCallback() {
            public void run(Object obj) {
              tween
                .start(d.x(), d.y())
                .end((int)random(100,540), (int)random(100,540))
                .ease(0.01)
                .spring(0.9)
                .register()
              ;
            }
          };

          timer = new HTimer().interval(2000).callback(onAnim);
        }
      }
    )
    .requestAll()
  ;
}

void draw() {
  //Emit 200 particles
  if(i++<200) {
    swarm.addTarget(
      canvas.add(
        new HRect(random(3,mySize))
        //with size(int,int) or scale(int) size can be adjusted here
        .rounding(4)
        .anchorAt( H.CENTER )
        .noStroke()
        .fill(colors.getColor())
      )
    );
  }

  H.drawStage();

  for(Iterator<HLocatable> it=swarm.goals().iterator();it.hasNext();) {
    it.remove();
    it.next();
  }

  for(HDrawable d : pool) {
    swarm.addGoal(d.x(),d.y());
  }
}
//controlP5 slider 1
void speed(int theSpeed) {
  //This one is easy:
  swarm.speed(theSpeed);
}
//controlP5 slider 2
void mySize(int mySize) {
  //But where is the size of a single object?!
    for(int i = 0; i < swarm.targets().size(); i++) {
      //swarm.WHERE?
  }
}

Thanks a lot