Simple Text Chat without ServerSide code

Hi,

I just created a simple example of a text chat.

But it is only working In one way ?

The first instance I open can send to all other instances but the other instances cant send at all?

What am I missing?

<?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" minWidth="955"                   minHeight="600"                  creationComplete="application1_creationCompleteHandler(event)"                   >      <fx:Script>           <![CDATA[                import mx.events.FlexEvent;                [Bindable] private var nc:NetConnection;                [Bindable] private var ns_out:NetStream;                [Bindable] private var ns_in:NetStream;                private var clientA:Object;                                private var clientB:Object;                                                protected function button1_clickHandler(event:MouseEvent):void                {                                     }                                protected function button2_clickHandler(event:MouseEvent):void                {                     var o:Object = new Object();                          o.name = name_input.text;                          o.message = message_input.text;                                          ns_out.send("@setDataFrame", "onMetaData", o );                }                protected function application1_creationCompleteHandler(event:FlexEvent):void                {                     //connect to the Flash Media Server                     nc = new NetConnection();                     nc.client = this;                     nc.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);                     nc.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);                     nc.objectEncoding = ObjectEncoding.AMF0;                     nc.connect("rtmp://fmsserverURL.com/live/");                                     }                                public function onBWDone():void{                }                                                private function netStatusHandler(event:NetStatusEvent):void                {                     trace('net status '+event.info.code);                                          if(event.info.code == "NetConnection.Connect.Success")                     {                          trace("connected", nc.connected);                          ns_out = new NetStream(nc);                          ns_in = new NetStream(nc);                                                    clientA = new Object();                          clientA.onMetaData = onMetaData_handler;                          clientA.onCuePoint = onCuePoint_handler                          clientA.onBWDone = onBWDone;                                                    clientB = new Object();                          clientB.onMetaData = onMetaData_handler;                          clientB.onCuePoint = onCuePoint_handler                          clientB.onBWDone = onBWDone;                                                    //ns.bufferTime=3;                          ns_in.addEventListener(NetStatusEvent.NET_STATUS, netStatus_handler);                          ns_out.addEventListener(NetStatusEvent.NET_STATUS, netStatus_handler);                                                    ns_in.client = clientA;                          ns_out.client = clientB;                          ns_out.publish('room1','live');                          ns_in.play('room1');                                               }                }                                private function netStatus_handler(e:NetStatusEvent):void                {                     //     trace(ns.time)                     //     trace(e.info.code);                                     }                                                //MetaData                private function onMetaData_handler ( infoObject:Object ):void {                     trace ('onMetaData: '+infoObject);                     chat_box.text+= infoObject.name+' : '+infoObject.message+'\n';                     traceObject(infoObject);                }                                private function onCuePoint_handler( item:Object ):void {}                                private function securityErrorHandler(e:SecurityErrorEvent):void                {                     trace("nc error", e.text);                }                                private function traceObject(o:Object):void{                     trace('\n');                     for(var val:* in o){                          trace('   [' + typeof(o[val]) + '] ' + val + ' => ' + o[val]);                     }                     trace('\n');                }           ]]>      </fx:Script>      <s:TextInput id="chat_box" x="54" y="54" width="268" height="206"/>      <s:Button x="368" y="329" label="connect" click="button1_clickHandler(event)"/>      <s:Button x="251" y="271" label="send" click="button2_clickHandler(event)"/>      <s:TextInput id='name_input' x="55" y="26"/>      <s:TextInput id="message_input" x="53" y="270"/> </s:Application>