Sorry if is a stupid question, but i am new to JavaFX.

I stored an ImageView that i created in SceneBuilder in an Arraylist, but when i try to change the LayoutX (or even when i try to use other ImageView methods) it doesn’t nothing.

the code is this:

@FXML ImageView myImageView = new ImageView(); 
ArrayList<ImageView> myList = new ArrayList<ImageView>();

public Controller()
    {
        myList.add(myImageView);
    }

i try to change LayoutX with this simple fuction that i associated with pressing a key, but does nothing:

public void move()
{
        myList.get(0).setLayoutX(myList.get(0).getLayoutX() - 50);
}

if i just do like this it works, but i want to use the ArrayList:

public void move()
{
        myImageView.setLayoutX(myImageView.getLayoutX() - 50);
}