Something

var my_fmt:TextFormat = new TextFormat();
	my_fmt.color = 0xFF0000;
	my_fmt.font = "DucDeBerry"; // linked instance name (case is correct)



var cn = this.createTextField("cn", this.getNextHighestDepth(), 150,0, 300,300);
cn.html = true;
cn.embedFonts= true;
cn.wordWrap = true;
cn.multiline = true;
cn.setTextFormat(my_fmt); 
cn.text = "Hello world!";