reference to parent class?

Solar2D General Questions/Discussion
#1

in my game.lua I have this:

function new()  
  
 local obj = display.newGroup();  
  
 currentLevel = Level.new(1);  
 currentLevel.game = obj; --also tried currentLevel.game = self;  
  
 function obj:replay()  
 print("game - replay")  
 end  
  
 return obj;  
  
end

In the Level lua file, I try to call the replay function in game.lua:

game:replay();

But I get this error:
attempt to call method ‘replay’ (a nil value)

How can I keep a reference to the game file in level.lua? [import]uid: 52127 topic_id: 10102 reply_id: 310102[/import]