Tween\Class Problem - Why the loop doesn't work?

programming flash
1 
for(i=0;i<6;i++){
	b_loop = _root.mc_menu["b_0"+i];
	b_loop.thisNum = i;
	
//

import flash.filters.BlurFilter;
import mx.transitions.Tween;
import mx.transitions.easing.Strong;

var totalBlur:Number = 5;
var noBlur   :Number = 0;

var blur:BlurFilter = new BlurFilter(totalBlur, totalBlur, 3);
b_loop.filters = new Array(blur);


var blurTween:Tween;
b_loop.onRollOver = function() {
	
	blurTween = new Tween(blur, "blurX", Strong.easeOut, blur.blurX, noBlur, 1.0, true);
	blurTween.onMotionChanged = function() { 
	blur.blurY = blur.blurX;
	b_loop.filters = new Array(blur);
	
	}
}

b_loop.onRollOut = function() {
	
	blurTween = new Tween(blur, "blurX", Strong.easeOut, blur.blurX, totalBlur, 1.0, true);
	blurTween.onMotionChanged = function() { 
    blur.blurY = blur.blurX;
    b_loop.filters = new Array(blur);
		
	}
  }
}

So strange. When I try without the loop the action works normally, but when added the looping that’s it. Stop to work.

Does anyone know why?

Another question, I am trying to apply the elastic tweening as well but is not working at all. Can I have more the one Tween\Class by MC?

Cheers,
Diego