i am trying to use picking in my game but i never get any pickresults, im very noob, so don't assume anything with me 
here is the code i have for a MouselListener attached to MouseInput.get()
MouseInput.get().addListener( new MouseInputListener(){
public void onButton(int button, boolean pressed, int x, int y) {
if (pressed){
BoundingPickResults pr = new BoundingPickResults();
Vector3f worldCoords = GameWorld.getDisplay().getWorldCoordinates(new Vector2f(x,y), 0);
Ray mouseray = new Ray(cam.getLocation(), worldCoords.subtractLocal(cam.getLocation()) );
System.out.println(GameWorld.getNode().getChild(1).getName() );
GameWorld.getNode().findPick(mouseray, pr);
for (int i = 0; i < pr.getNumber(); i++) {
pr.getPickData(i).getTargetMesh().setRandomColors();
}
System.out.println("("+x+","+y+")");
}
}
public void onWheel(int wheelDelta, int x, int y) {}
public void onMove(int xDelta, int yDelta, int newX, int newY) {}
});
When ever i click i do get the x and y coordinates from the system.out
GameWorld.getNode() returns the main node that my game uses. It contains the terrain and another node, that has a Box in it. But no matter where i click i get no results.