Data connection between Java Webdynpro - Flex Flash Island

Hi,
I'm developing a Java Webdynpro with connection to a Flex Flash Island. I'm using Flex 3.2.
I've already set up the connection from WDJ to Flex, by using Events and the FlashIsland.fireEvent method, this all works fine. Now I'm trying to update a value in WDJ, to be updated in Flex. This gives the following error:
Error: Error #1023: Stack overflow occurred.
     at Function/http://adobe.com/AS3/2006/builtin::apply()
     at mx.binding::Watcher/wrapUpdate()
     at mx.binding::PropertyWatcher/eventHandler()
     at flash.events::EventDispatcher/dispatchEventFunction()
     at flash.events::EventDispatcher/dispatchEvent()
     at mx.core::UIComponent/dispatchEvent()
     at UWLApplication/set opentask_updated()
     at MethodInfo-4234()
     at Function/http://adobe.com/AS3/2006/builtin::call()
     at sap.core.wd.context::WDContextListener/execute()
     at sap.core.wd.context::WDContext/notifyListeners()
     at sap.core.wd.context::WDContext/_set()
     at sap.core.wd.context::WDContext/set()
     at sap.wd.island::WDIsland/storeProperty()
     at sap.wd.island::WDIsland/onUpdateProperty()
     at mx.binding.utils::ChangeWatcher/wrapHandler()
     at flash.events::EventDispatcher/dispatchEventFunction()
     at flash.events::EventDispatcher/dispatchEvent()
     at mx.core::UIComponent/dispatchEvent()
     at UWLApplication/set opentask_updated()
     at MethodInfo-4234()
This is especially strange, cause before I had a refresh button in which I updated my entire item collection. Now, I have added this field and suddenly I get this error !
Does anybody has any idea what this could mean? Any help would be much appreciated ...
My field in Flex:
\[Bindable\]
public var opentask_updated:Number;
<mx:Text id="opentask_updated_text" text="{opentask_updated.toString()}" />
My adaptions in WDJ:
public void getInbox( ) {
       wdContext.currentInboxElement().setOpentask_updated(0);
public void wdDoInit() {
       getInbox();

Solved!
It appeared to be a "long" parameter and I was trying to put it in a "Number" parameter in Flex (because there is no long in Flex)
When I changed both to String, it worked!

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Murat Y.

Creating Flash Island Events
To implement the Visual Composer application if data has changed on the Flash island side, we need to define a Flash Island event. In this example, the Web Dynpro application needs to be updated once the user has changed one of the two slider values. The Web Dynpro application will trigger an event that will be handled in Visual Composer. Once you have created a Flash island event entry, you can assign a Web Dynpro action method to be called if the Flash island event is raised.
1.     Right-click RootElement again and create a SliderCostsEvent and a SliderRevenuesEvent:
2.     Assign the following attribute values to the Flash island event entries:
SliderCostsEvent:
SliderRevenuesEvent:
Note:
The Flash island event name must be the same as the name in the corresponding Data Connection Range and Property. For example, in the Xcelsius Data Connection, we defined a Range u201CSliderRevenuesu201D. Once the referring value is changed, the Flash island event SliderRevenues is called (which is bound to a Web Dynpro action method) and also the data is written to the SliderRevenues Flash island property (which is bound to a Web Dynpro context attribute). Once an Action method is called from the Flash island event, the data is transferred to the Web Dynpro context.
The onAction property points to a method Update(), which you need to create in the FlashIslandView (see implementation following).
3.     Now we will create the event that will refresh the data in the Visual Composer application. Go to the Events tab of the Component Controller and click New. Enter RefreshData as the event name and click Finish.
4.     Create the Component Controller method that will be called by the viewu2019s Update method. Go to the Component Controlleru2019s Methods tab and create a new method by clicking New. In the dialog box, select Method and click Next. Enter the name of the method, i.e. updateData and click Finish. Save the application.
5.     Right-click on this method and select Navigate To  Implementation. This will open the implementation code of this method.
The method should look like this:
public void updateData( ) {
    //@@begin updateData()
       wdThis.wdFireEventRefreshData();
    //@@end
The Update method of the FlashIslandView calls the Update method of the Component Controller; see implementation below:
public void onActionUpdate(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
     //@@begin onActionUpdate(ServerEvent)
       wdThis.wdGetCostRevenueCompController().updateData();
    //@@end
The Update method of the Component Controller will trigger the event that will refresh the Visual Composer UI with the new data. The reason for the multiple calls is that actions that are defined in the view cannot fire events but they can call a method, so we need to call a Component Controller method that will fire the event.
6.     Next, you should expose this event in the Interface Controller. Right-click the event and select Copy. Go to the Interface Controller, select the Events tab and paste the event.

Data connection between Java Webdynpro - Flex Flash Island

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