Dynamically output XML childs

programming flash
1

I’m trying to output stuff from a XML.
This way works good:

trace("Length:" + [COLOR=#ff8c00]xmlData[/COLOR].TheChilds.length());

But what I want is to instead of writing [COLOR=#ff8c00]TheChilds[/COLOR], I would like it to be [COLOR=#ff0000]inputTextField.text[/COLOR].
Like this:

trace("Length:" + xmlData.([COLOR=#ff0000]inputTextField.text[/COLOR]).length());

But this not work.
I would really appreciate some help!

Thanks in advance,
Tompa