Android augmented reality OpenCV & JME Render

I use OpenCV and JME to make Augmented App .

The OpenCV part find the target , and save into boolean isTargetFound .

How to tell JME not Render model , When isTargetFound is fasle ?

Full Code: https://github.com/ar9013/Project_AR2

The ImageDetectionFilter class has a find findPose() to get the boolean isTargetFound

CameraAccessJMEActivity class to set the

final ARFilter Marker_fireworks to set the ImageDetectionFilter

			try {
				// Define The fireworks image to be 1.0 units tall.
				Marker_fireworks = new ImageDetectionFilter(CameraAccessJMEActivity.this, 
						R.drawable.fireworks,
						mCameraProjectionAdapter, 1.0);
			} catch (IOException e) {
				Log.e(TAG, "Failed to load drawable: " + "Marker_fireworks");
				e.printStackTrace();
				break;
			}

mImageDetectionFilters = new ARFilter[] { Marker_mini, Marker_fireworks, Marker_pukeko };

((com.ar4android.cameraAccessJME.CameraAccessJME) app).setARFilter(mImageDetectionFilters[mImageDetectionFilterIndex]);

the CameraAccessJME class to Render Background and ForegroundScene ,the setARFilter use to set the boolean which ImageDetectionFilter from mTargetFound

public void setARFilter(ARFilter arFilter) {
filter = arFilter;
targetFound =filter.getFlagTargetFound();

	if(targetFound){
	pose = filter.getGLPose();
	 
	}

The boolean targetFound =filter.getFlagTargetFound(); use to determine to Render the ForegroundScene, the code is below

public void simpleInitApp() {

	// Do not display statistics or frames per second
	setDisplayStatView(false);
	setDisplayFps(false);
	// We use custom viewports - so the main viewport does not need to contain the rootNode
	viewPort.detachScene(rootNode);
	
	initVideoBackground(settings.getWidth(), settings.getHeight());
	initBackgroundCamera();
	
	
	if(targetFound){
	
		initForegroundScene();			
		initForegroundCamera(fgCamFOVY);
	}
}

When run , seen like the if statement can’t use in simpleInitApp().

Maybe set cull hint to always
http://javadoc.jmonkeyengine.org/com/jme3/scene/Spatial.html#setCullHint(com.jme3.scene.Spatial.CullHint)