Add object to scene

Question

Hi every body.
I have a problem. i want to add object in scene, but i want to add object when user pick other object. the PickBehavior i write this and it�s work and i can recognize the object have been selected. However i can not add other object.
Anebody can help me.
Thank
This is my pickbehavior code
public void updateScene(int i, int i0) {
PickResult pickResult = null;
Node n = null;
Logger.getLogger(this.getClass()).info("En el update scene");
this.pickCanvas.setShapeLocation(i,i0);
pickResult = pickCanvas.pickClosest();
if (pickResult != null) {
n = pickResult.getNode(PickResult.SHAPE3D);
Logger.getLogger(this.getClass()).info("==>"+n.toString());
if (n instanceof FieldShape) {
Logger.getLogger(this.getClass()).info("picked FieldShape");
} else if(n instanceof SoldierShape) {
Logger.getLogger(this.getClass()).info("picked SoldierShape");
BranchGroup bg = new BranchGroup();
bg.addChild(new Sphere(1.7f));
scene.addChild(bg);
this.pickCanvas.getBranchGroup().compile();
} else {
Logger.getLogger(this.getClass()).error("no shape picked");
}

Answer 1

i reply myself :D
i can add other object.
i add this capabilities a branchGroup
root.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
root.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND);
and if you use a transformgroup and you think add other object in TransforGruop you need this code:
transformGroup.setCapability(transformGroup.ALLOW_CHILDREN_WRITE);
transformGroup.setCapability(TransformGroup.ALLOW_CHILDREN_EXTEND);
transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
Sorry for my english