How to animate dynamically created movie clip

programming flash
1

I created a movie clip


var display_mc:MovieClip = new MovieClip();
    display_mc.graphics.beginFill(0x000000);
    display_mc.alpha= 0.0;
    display_mc.graphics.drawRect(0, 0, 310, 200);
    display_mc.graphics.endFill();
    display_mc.x = offsetX;
    display_mc.y = 0.1;
    addChild(display_mc);

now this movie clip contains 3 dynamic text box and 1 image loaded from xml,

this codes loops and creates n number of movie clip and display

for (var i:int = 0; i<=total-1; i++) {
        var myHeading:String = xmlData.content.title.text()*;
        var myDesc:String = xmlData.content.desc.text()*;
        var myLink:String = xmlData.content.links.text()*;
        var myImg:String = xmlData.content.url.text()*
        createMovieClip(offsetX, myHeading, myDesc, myLink);
        loadImage(myImg, imgX); // loads bitmap
        offsetX = offsetX + 312; // x offset for movie clip
        imgX = imgX + 312; // offset for logo
        //trace(imgX);
        //trace(offsetX);
    }

How can I animate this (slide to x position), since there is nothing in timeline ?

Any help much appreciated…