Flex STOMP Receiver. Uses http://code.google.com/p/as3-stomp/

TopicReceiver.mxml

<?xml version="1.0"?>
<s:Group
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark" xmlns:stomp="org.codehaus.stomp.*"
        creationComplete="init()"
        >

    <fx:Script>
        <![CDATA[

        import org.codehaus.stomp.Stomp;
        import org.codehaus.stomp.event.MessageEvent;
        import org.codehaus.stomp.headers.*;


        [Bindable]
        public var message:String;

        [Bindable]
        public var topic:String = 'workflow.parameter.62';

        private var destination:String = "/topic/" + topic;

        public var stomp:Stomp = new Stomp();

        public var mqHost:String;

        private function init():void {

            destination = "/topic/" + topic;

            trace("Adding event listener");
            stomp.addEventListener(MessageEvent.MESSAGE, handleMessages);

            mqHost = getHostName();

            trace("Making Stomp connection");
            var ch:ConnectHeaders = new ConnectHeaders();
            ch.login = "guest";
            ch.passcode = "guest"
            stomp.connect(mqHost, 61613, ch);
            stomp.subscribe(destination);
        }


        public function stompConnect():void {

            stomp.unsubscribe(destination);

            destination = "/topic/" + topic;
            trace("Resubscribing on destination: " + destination);
            stomp.subscribe(destination);

        }


        private function handleMessages(event:MessageEvent):void {

            var byteArray:ByteArray = event.message.body;
            var message:String = byteArray.toString();
            trace("Received message " + message);
            this.message = message;

        }

        public function getHostName():String {

            var hostUrl:String = parentApplication.url;
            trace("Host Url: " + hostUrl);

            var re:RegExp = /http:\/\/(\w*):\d*/;
            var result:Array = re.exec(hostUrl);

            trace(result);
            var hostName:String = result[1];
            trace("ActiveMQ Hostname = " + hostName);

            return hostName;
        }



        ]]>
    </fx:Script>


    <s:VGroup width="100%" height="100%" top="10" left="10">
        <s:HGroup>
            <s:Label text="Topic:"/>
            <s:TextInput text="@{topic}" width="200" valueCommit="stompConnect()"/>
        </s:HGroup>

        <s:HGroup>
            <s:Label text="Message:"/>
            <s:TextInput id="messageTextInput" width="200" text="{message}"/>
        </s:HGroup>
    </s:VGroup>

</s:Group>

The above works with ActiveMQ with STOMP protocol enabled. Make sure that you have a flashpolicy server (publishing a socket policy file, allowing access to your STOMP message queue) for this to work.