Problem adding another tween for a MC while running a Tween !!!

Question

Hi All,
Shall i start second tween for a MC, its already a running a tween?
I have two red dots in my stage. Initially i start moving those dots from a position to another position, while tweening start i m calling a function for starting a new tween using "MOTION_CHANGE" class, In that function i m trying to make a blink effect to those two red dots., Not working...!!!
Pls suggest me, the way i m using is correct? or do i needs to done by another way ?
Here my codes...
import fl.transitions.*;
import fl.transitions.easing.*;
var MC:MovieClip=new MovieClip();
var tweenX:Array=new Array();
var blinkTween:Array=new Array();
for (var i:int=1; i<=2; i++) {
MC=drawCircle();
MC.id=i;
MC.x=100;
MC.y=100*i;
addChild(MC);
tweenX[i]=new Tween(MC,"x",Regular.easeIn,MC.x,MC.x+300,5,true);
tweenX[i].addEventListener(TweenEvent.MOTION_CHANGE, blinkCircle);
function blinkCircle(evt:TweenEvent):void {
trace(evt.target.obj.id);
blinkTween[evt.target.obj.id]=new Tween(evt.target.obj,"alpha",Regular.easeOut,100,0,.5,true);
blinkTween[evt.target.obj.id].addEventListener(TweenEvent.MOTION_FINISH, blinkCircle);
function drawCircle() {
var circleMC:MovieClip=new MovieClip();
circleMC.graphics.beginFill(0xFF0000);
circleMC.graphics.drawCircle(0, 0, 10);
return (circleMC);

Answer 1

You have a couple of problems in your code.  One being that alpha values range from 0 to 1 (not 100).  But more significantly, you do not want the MOTION_CHANGE continuously calling the blink function... as long as the first tween is running it will continuoualy call that function and you'll not see the alpha change until the tween is done changing...
import fl.transitions.*;
import fl.transitions.easing.*;
var MC:MovieClip=new MovieClip();
var tweenX:Array=new Array();
var blinkTween:Array=new Array();
for (var i:int=1; i<=2; i++) {
     MC=drawCircle();
     MC.id=i;
     MC.x=100;
     MC.y=100*i;
     addChild(MC);
     tweenX[i]=new Tween(MC,"x",Regular.easeIn,MC.x,MC.x+300,5,true);
     tweenX[i].stop();
     tweenX[i].addEventListener(TweenEvent.MOTION_START, blinkCircle);
     tweenX[i].start();
function blinkCircle(evt:TweenEvent):void {
     blinkTween[evt.target.obj.id]=new Tween(evt.target.obj,"alpha",Regular.easeOut,1,0,.5,true);
     blinkTween[evt.target.obj.id].addEventListener(TweenEvent.MOTION_FINISH, blinkCircle);
function drawCircle() {
var circleMC:MovieClip=new MovieClip();
circleMC.graphics.beginFill(0xFF0000);
circleMC.graphics.drawCircle(0, 0, 10);
return (circleMC);