How do you loop a scene using only AS3?

programming flash
1

I have 4 layers - AS3 layer (empty), Logo (with a logo movie clip on it), Background (with a background movie clip shape on it) & an empty Layer1.

I’m learning to use only AS3 to do all my tweening etc rather than timeline based.
I’ve created some basic script on Frame1 of my AS layer:

import fl.transitions.Tween;
import fl.transitions.easing.*;
var myTweenAlpha:Tween = new Tween(BG, "alpha", Strong.easeInOut, 0, 1, 1, true);
var LFLogoAlpha:Tween = new Tween(LFLogo, "alpha", Strong.easeIn,0,1,1.5,true);

However my flash animation won’t loop once it completes these 2 tweens and I’m wondering what I’m doing wrong?

Any help greatly received.
X10