What do I use instead of nifty.exit() to give the game state back to the game

On my Menu I have a button Start Game when I push it I want to give the focus(if thats the right word) back to the game

My Code is


public void startGame() {

System.out.println(this + " startGame()");





The Problem with this is that I have a second Nifty Screen Called Inventory

if I call nifty.exit on that one two It seems the program gets confused and doesnt know which GUI to use and wont close either.

Use Case:

Game Starts Shows the Menu

User Hits the Start Game Button

Game starts

User Wants to check inventory

Inventory Screen Starts up

User wants to exit out of inventory

… Program gets stuck here window wont close.