//Regular textfield:
tf.text = "Hello";

//---------------------------------------------
//TLF:
var fontDescr = new FontDescription();
fontDescr.fontName = font.fontName;
fontDescr.fontPosture = FontPosture.NORMAL;
fontDescr.fontLookup = FontLookup.EMBEDDED_CFF;
//fontDesc.fontLookup = flash.text.engine.FontLookup.DEVICE;
fontDescr.renderingMode=RenderingMode.CFF;
//fontDesc.renderingMode=flash.text.engine.RenderingMode.NORMAL;

var fmt = new ElementFormat();
fmt.fontDescription = fontDescr;
fmt.fontSize = 30;
fmt.color = 0xFF0000;

var str = "Hello ";
var textBlock = new TextBlock();
var textElement = new TextElement(str, fmt);
textBlock.content = textElement;
var line = textBlock.createTextLine(null, 800);
line.x = line.y = 200;
addChild(line);