< XML and TextFlowUtil.importFromXML

You only need to change the name of the xml file, then with my code, your markup will be imported as textflow even with "&lt;" in the markup.

<?xml version="1.0" encoding="utf-8" ?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
               xmlns:s="library://ns.adobe.com/flex/spark"
               xmlns:mx="library://ns.adobe.com/flex/mx" addedToStage="importer()">
   
   
   
    <fx:Script>
        <![CDATA[
           
           
            import flash.events.*;
            import flash.net.URLLoader;
            import flash.net.URLRequest;
           
            import flashx.textLayout.conversion.*;
            import flashx.textLayout.elements.*;
            import flashx.textLayout.formats.TextLayoutFormat;
           
            var urlRequest:URLRequest;
           
            var urlLoader:URLLoader;
           
           
           
            public function importer()
               
            {
               
                urlRequest = new URLRequest('x.xml');
               
                urlLoader = new URLLoader();
               
                urlLoader.addEventListener(Event.COMPLETE, caricato);
               
                urlLoader.addEventListener(IOErrorEvent.IO_ERROR, erroreCaric);
               
                urlLoader.load(urlRequest);
               
            }
           
            function erroreCaric(e:IOErrorEvent):void
               
            { trace("error: file not found"); }
           
            function caricato(e:Event):void
               
            {
               
               var markup:XML = new XML(e.target.data);
               
                var config:Configuration = new Configuration();
               
                var format:TextLayoutFormat = new TextLayoutFormat(config.textFlowInitialFormat);
               
                format.whiteSpaceCollapse = "collapse";
               
                config.textFlowInitialFormat = format;
               
                var imp:ITextImporter = TextConverter.getImporter(TextConverter.TEXT_LAYOUT_FORMAT, config);
               
                imp.throwOnError = false;
               
                code2.textFlow = imp.importToFlow(markup);

               
            }
        ]]>
    </fx:Script>
   
        <s:RichEditableText id="code2"/>
   
   
</s:Application>