Setting font for created textfield

programming flash
1 
_root.sidearea.removeMovieClip();
_root.createEmptyMovieClip("sidearea", 3);
_root.sidearea.createTextField("scriptinput", 2, 0, 0, 600, 600);
mt = new TextFormat();
mt.font = "Lucida Console";
_root.sidearea.scriptinput.setTextFormat(mt);
_root.sidearea.scriptinput.type = "INPUT";
_root.sidearea.scriptinput.border = true;
_root.sidearea.scriptinput.multiline = true;

just copy it into the first frame and fix it and copy it back i know its something really simple but for the life of me i cannot figure it out.

thanks.