For my game, I have to set highest z index for my sprite. At present, I wrote following code but didn't work for me.

    Sprite houseSprite = new Sprite(pX, pY,
            textureManager.houseBgRegion.deepCopy(),
            mVertexBufferObjectManager);
    attachChild(houseSprite);
    houseSprite.setZIndex(500);
    sortChildren();

My requirement did not satisfied with setting sprite in the HUD. So any how I have to apply highest z index. Also in my game sprites are dynamically generated as per game play.

So members please share your thoughts.