Scrollbar width

I'm wanting to add a list with a wider scroll bar than standard.

Am I able to do this in AS3 (Flash CC)

private function dsipList(sw:int = 0, v_ListMx:int = 5, v_ListMy:int = 5, v_ListW:int = 480, v_ListH:int = 1000, v_ListRh:int = 28):void {

      //trace("appList: "+sw+' '+nw);

      vList = new List();

     for (vi = 0; vi < ar.length; vi++) {

          var vns:String = ar[vi][1];

           vns = vns.substr(0,30);

           var vnt:String = ar[vi][2];

           vnt = vnt.substr(0,10);

           vList.addItem({label:ar[vi][0]+' ~ '+vnt+' ~ '+vns, data:[ ar[vi][0], ar[vi][1], ar[vi][2], ar[vi][3], ar[vi][4], ar[vi][5], ar[vi][6], ar[vi][7], ar[vi][8], ar[vi][9], ar[vi][10] ] } ); 

      }

     vList.addEventListener(Event.CHANGE, showData);

     vList.setRendererStyle("textFormat", txtFormat);

     vList.width = v_ListW;

     vList.height = v_ListH;

     vList.rowHeight = v_ListRh;

     vList.move(vListMx,v_ListMy);

     hList.removeChildren();

     hList.addChild(vList);

     hList.removeChildren();

     hList.addChild(vList);

}

Thanks