Getting the variable name

Question

Hi
May be a simple question, but I can't figure out how actually.
When I'm doing this
var obj:Object = new Object();
obj.test = "My Test";
for(var i:* in obj)
     trace(i + " : " + obj[i]);    
The output is -> test : My Test
My problem comes when I put an object inside the object
var obj:Object = new Object();
obj.test = new Object()
obj.test.secondTest = "My Test";
for(var i:* in obj)
     trace(i + " : " + obj[i]);    
The output is -> test : [object Object]
So any idea how to get the variable name instead of [object Object], just like the first output but with the second code. I have an object inside an object.
Thanks

Answer 1

The following approach will dig it's way in.  I added other variables to the main object just for demo sake...
var obj:Object = new Object();
obj.test1 = "test string";
obj.test = new Object();
obj.test.secondTest = "My Test";
obj.test2 = new Object();
obj.test2.secondTest2 = new Object();
obj.test2.secondTest2.val = "deeper test";
function traceObjectVars(obj_arg:Object):void {
      for(var i:* in obj_arg){
            if(typeof(obj_arg[i]) == "object"){
                  traceObjectVars(obj_arg[i]);
            } else {
                 trace(i + " : " + obj_arg[i]);
traceObjectVars(obj);