How to use jsfl to call the code in the swf expansion panel

Here is the function code in the swf panel

Example01.addEventListener(MouseEvent.CLICK, onBtnClick);

function onBtnClick(e:MouseEvent):void {

var jsfl:String = new String();

jsfl += "an.getDocumentDOM().getTimeline().convertToKeyframes();\nvar doc = fl.getDocumentDOM()\nvar c = doc.getTimeline().currentFrame;\nfl.getDocumentDOM().getTimeline().setSelectedFrames(c-0,c-0);\nan.getDocumentDOM().setElementProperty('loop', 'play once');\n;";	
		
MMExecute(jsfl);

}