try {
	        	UUID uuidToChange = UUID.fromString(player.getRealUUID());

	            Class clazz = GameProfile.class;
	            Field field = clazz.getDeclaredField("id");

	            if(!field.isAccessible())
	                field.setAccessible(true);

	            System.out.println(field.get(player.getProfile()));

	            field.set(player.getProfile(), uuidToChange);

	            System.out.println(field.get(player.getProfile()));

	        } catch (IllegalAccessException | SecurityException | NoSuchFieldException e) {
	            e.printStackTrace();
	        }