TextFormat not working :(

programming flash
1

Does anyone know of any bugs in Flash that would prevent me from formatting a text field I have added dynamically to the screen?

My code is very standard but its having no effect :frowning: Its really frustrating!!!

var _title:TextField = new TextField();
var tf:TextFormat = new TextFormat();
tf.size = 28;
tf.color = 0x000000;
tf.font = "Arial";
_title.setTextFormat(tf);
addChild(_title);