Multiline text alignment in UI

Hi guys. Newby here. Sorry if this is silly questtion, but I am getting bold solving this with no prevail.

I have a multiline text. But it's aligned to the left. Any way to center align it?

<CODE>

var aboutWin = new Window("palette", "About", undefined);

var st = aboutWin.add("statictext", undefined, "", {multiline: true } );

st.text = "Some long long long text paragraph here";

st.characters = 30;

</CODE>

How do I center align it?

Thank you.