I use this to tween many parameters
var tween:Tween = new Tween(imageObject, "x", Regular.easeIn, imageObject.x,nextImageObject.x-imageStep, 1, true);
var tween1:Tween = new Tween(imageObject, "rotationY" , Regular.easeIn, imageObject.rotationY, rotationAngle,1, true);
var tween2:Tween = new Tween(imageObject, "z" , Regular.easeIn, imageObject.z, newWidth,1, true);
var tween3:Tween = new Tween(imageObject, "height", Regular.easeIn, imageObject.height, imageHeightAtEgde, 1, true);
var tween4:Tween = new Tween(imageObject, "width", Regular.easeIn, imageObject.width,newWidth,1,true);
I want run this tweens together. Is there any "clean" methods to do this without many tweens?
First of all, everyone in the community suggests shying away from the default ActionScript Tweening engine. That's why Adobe basically stopped improving it. There are way better tweening engines.
I would suggest looking into TweenLite. It has a lot of capabilities and instead of creating multiple tweens for parameters like in your example, you pass in tweening objects with parameters you want to tween, like this:
TweenLite.to(imageObject, 1, {x: nextImageObject.x-imageStep, rotationY: rotationAngle, z: newWidth, width: newWidth, height:imageHeightAtEgde});