A problem with dublicateMovieClip!

When i use this code

_root.createEmptyMovieClip(“mov1”,_root.getNextHighestDepth());
_root.mov1.createEmptyMovieClip(“test1”,_root.getNextHighestDepth());
_root.mov1.createEmptyMovieClip(“test2”,_root.getNextHighestDepth());
trace(mov1)
for(i in _root.mov1) trace(i);
trace("------");

duplicateMovieClip(mov1,“mov2”,_root.getNextHighestDepth());
trace(mov2);
for(i in mov2) trace(i);

Output is :
[COLOR=Red]_level0.mov1
test1
test2

_level0.mov2

[COLOR=Black]I used debug and see mov2, don’t have anything in mov2[/COLOR]
[/COLOR]
Anything wrong ? Please help me.