Generating textfields in a for-loop, not working

Why doesn’t this work?
[AS]
times = 6;
for (i = 0; i <= times; i++) {
_root.createTextField(“txt” + i, _root.getNextHighestDepth());
_root[“txt” + i].text = i;
trace(_root[“txt” + i]);
}[/AS]

It works for empty and library-linked mc’s but not textfields…