[Deads]

Спасиб помогло, если кому понадобится выкладываю сорц

pone.html=true;
replace = function (findWhat, replaceWith) {
	if (findWhat != undefined and findWhat != "") {
		text1 = (text1.split (findWhat)).join (replaceWith);
	}
	return this;
};

var myStyleSheet:TextField.StyleSheet = new TextField.StyleSheet();
myStyleSheet.parseCSS(".cnt {text-align:center;}");
pone.styleSheet=myStyleSheet;

replace("[center]","<span class='cnt'>");
replace("[/center]","</span>");

pone.htmlText = text1;