Tween doesn't loop

1

I’m trying to use the tween effect applying in my code but I can’t make the loop working. It’s doesn’t loop back at all but only show me once the dissappear.
Does anyone know how to make that work??

Here’s my code:

import mx.transitions.Tween;
import mx.transitions.easing.*;

var lexml = new XML();
var chemin = “…/xml/”;

lexml.ignoreWhite = true;
lexml.onLoad = loaderXML;
lexml.load(chemin+“company.xml”);

function loaderXML(loaded) {
var racine = this.firstChild;
var nb_elements = racine.childNodes.length;

if (loaded) {
    for(i=0;i<nb_elements;i++) {
        
        var company_name = racine.childNodes*.attributes;
        var item = _root.attachMovie("company", "item"+i, i);
        var cote_gauche = _root["item"+(i-1)].nom_txt._x;     
        var profondeur_mc = _root["item"+(i-1)].nom_txt._width;     
        
        item.nom_txt.text = company_name.id;
        item.nom_txt.autoSize = "left";    
        
        // Positionning
        item.nom_txt._x = 0;
        item.nom_txt._x = cote_gauche + profondeur_mc + 20;
        item.nom_txt._y = 20;
    

        var xPosT:Tween = new Tween(item, "_x", None.easeOut, Stage.width, -360, 3, true);
        xPosT.onMotionFinished = function() {
            this.continueTo();
        };
    }
} else {
    text_area.text = "Can NOT load the images request. Please make sure you have right path...";
}

}