How move Stage content to a MC?

Ok I answer myself again:

Stage cannot be passed toa MC directly, you need to define a DATA, Bitmap and MovieClip Variables

var bitmap:Bitmap = new Bitmap();                         // to convert BitmapData to graphic

var holderThumb:MovieClip = new MovieClip()          // para contener el MC
var bitmapData:BitmapData = new BitmapData(stage.stageWidth, stage.stageHeight); // to capture screen

bitmapData.draw(stage);  // Capture Stage (screen)
bitmap.bitmapData = bitmapData; // conviert to graphic
holderThumb.addChild(bitmap)   // pass to a MC

If anybody needs.

Bye