jsfl 选择图层 选择帧 转化成mc

//打开fla
var _openDOC = fl.openDocument("file:///E|TE/爱.fla");

//获取图层4的总帧
var _Length=fl.getDocumentDOM().getTimeline().layers[3].frames.length;

//选中图层3 并设置开锁可见状态
fl.getDocumentDOM().getTimeline().setSelectedLayers(2);
fl.getDocumentDOM().getTimeline().setLayerProperty('locked', false);
fl.getDocumentDOM().getTimeline().setLayerProperty('visible', !false);
			
//选中图层4的所有帧  用来选中特定帧，选择第二帧 setSelectedFrames(1, 1);选择第三帧 setSelectedFrames(3, 3);
fl.getDocumentDOM().getTimeline().setSelectedFrames(0, _Length);
			
//选择当前所有开锁可见的图层内容
//fl.getDocumentDOM().selectAll();


//将选择区转为影片剪辑，注意全帧，只会将第一帧转
//var newMc=fl.getDocumentDOM().convertToSymbol('movie clip', '', 'top left');
//var lib = fl.getDocumentDOM().library;
//if (lib.getItemProperty('linkageImportForRS') == true) {
//		lib.setItemProperty('linkageImportForRS', false);
//	}else {
//		lib.setItemProperty('linkageExportForAS', false);
//		lib.setItemProperty('linkageExportForRS', false);
//	}
//lib.setItemProperty('scalingGrid',  false);
//fl.getDocumentDOM().getTimeline().layers[2].frames[0].elements[0].name = "bg_mc";