[AS 2.0] Delete tween motion after is finished!

Hello,

I have a small problem, how it’s possible to delete a tween effect after he has finished the tween?

I use tween class, this is the code, and i want in frame 41 to delete the tween.


btn_sector1.holder.loadMovie ("sector1.jpg");
btn_sector1.buttontext.theText.text = "S E C T O R 1";
btn_team.holder.loadMovie ("team.jpg");
btn_team.buttontext.theText.text = "T E A M";
btn_products.holder.loadMovie ("sector1.jpg");
btn_products.buttontext.theText.text = "P R O D U C T S";
btn_work.holder.loadMovie ("team.jpg");
btn_work.buttontext.theText.text = "W O R K";
btn_process.holder.loadMovie ("sector1.jpg");
btn_process.buttontext.theText.text = "P R O C E S S";
btn_contact.holder.loadMovie ("team.jpg");
btn_contact.buttontext.theText.text = "C O N T A C T";
//+++++++++++++++++++++++++++++++++++++++++++++++++++ VARIABLES +++++++++++++++++++++++++++++++++++++++++++++++++++\\
var curent_x = _x;
var curent_y = _y;
var stage_x = Stage.width / 2;
var stage_y = Stage.height / 2;
//+++++++++++++++++++++++++++++++++++++++++++++++++++ IMPORTS +++++++++++++++++++++++++++++++++++++++++++++++++++\\
import mx.transitions.Tween;
import mx.transitions.easing.*;
//+++++++++++++++++++++++++++++++++++++++++++++++++++ TWEENS +++++++++++++++++++++++++++++++++++++++++++++++++++\\
//======================================= BUTTON SECTOR1 ====================================================
var btn1:Tween = new Tween (btn_sector1, "_alpha", None.easeNone, 30, 100, 40, false);
var btn11:Tween = new Tween (btn_sector1, "_x", Bounce.easeOut, stage_x, 187.3, 40, false);
var btn12:Tween = new Tween (btn_sector1, "_y", Bounce.easeOut, stage_y, 327.3, 40, false);
var btn13:Tween = new Tween (btn_sector1, "_xscale", Bounce.easeOut, 0, 60, 20, false);
var btn14:Tween = new Tween (btn_sector1, "_yscale", Bounce.easeOut, 0, 60, 20, false);
btn14.onMotionFinished = function ()
{
    var btn13:Tween = new Tween (btn_sector1, "_xscale", Bounce.easeOut, 60, 100, 20, false);
    var btn14:Tween = new Tween (btn_sector1, "_yscale", Bounce.easeOut, 60, 100, 20, false);
};

here it’s a small preview of my timeline.

Thanks in advance, btibia