Communication between widgets

Bonjour,

j'essaie de réaliser la communication entre deux widgets, j'ai essayé le code suivant mais sans aucun résultat !
j'utilise flex 4.6 & java

Widget 1

Code:

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private function widgetCommunication1():void
{
    addSharedData("your key", shared data(ArrayCollection)); 
}

Widget 2

Code:

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<viewer:BaseWidget xmlns:fx="http://ns.adobe.com/mxml/2009"
                   xmlns:s="library://ns.adobe.com/flex/spark"
                   xmlns:viewer="com.esri.viewer.*"
                   initialize="basewidget1_initializeHandler(event)"
                   >
    <fx:Script>
        <![CDATA[
            import com.esri.viewer.AppEvent;
 
            import mx.events.FlexEvent;
 
            protected function basewidget1_initializeHandler(event:FlexEvent):void
            {
                ViewerContainer.addEventListener(AppEvent.DATA_PUBLISH, sharedDataUpdated);
            }
 
            private function sharedDataUpdated(event:AppEvent):void
            {
                var data:Object = event.data;
 
                if (data.key == "my key") 
                {
                     // do something..     
                }
            }
        ]]>
    </fx:Script>

pourriez vous m'aider ?!!