Не анимируется фон JavaFX, помогите с кодом, не запускается через play();

 @FXML 
	    private ImageView bg1, bg2, player; 
	     
	    private final int BG_WIDTH = 800; 
	     
	    private ParallelTransition parallelTransition; 
 
	    @FXML 
	    void initialize() { 
	    	TranslateTransition bgOneTrans = new TranslateTransition(Duration.millis(5000), bg1); 
	    	bgOneTrans.setFromX(0); 
	    	bgOneTrans.setByX(BG_WIDTH * -1); 
	    	bgOneTrans.setInterpolator(Interpolator.LINEAR); 
	    	bgOneTrans.autoReverseProperty(); 
	    	 
	    	TranslateTransition bgTwoTrans = new TranslateTransition(Duration.millis(5000), bg2); 
	    	bgTwoTrans.setFromX(0); 
	    	bgTwoTrans.setByX(BG_WIDTH * -1); 
	    	bgTwoTrans.autoReverseProperty(); 
	    	bgTwoTrans.setInterpolator(Interpolator.LINEAR); 
	    	 
	    	parallelTransition = new ParallelTransition(bgOneTrans, bgTwoTrans); 
	    	parallelTransition.setCycleCount(Animation.INDEFINITE); 
	    	parallelTransition.play(); 	 
}