Error while adding a new method to the Session Bean

Question

Hello everyone. I'm using jdev 11g, ejb, jpa & jsf. Everything works fine. But when I try to add a custom method to the Session Bean, I'm having an error.
Here is my steps:
1) I added a new method to SessionBean.java. Something like this:
public void Hello() {
System.out.println("Hello!");
2) Then using Structure palette I exposed this method through Local interface and created data control
3) Finally, I made a command button binded to this method (just droped it from DataControls.dcx to my page)
When I start the page and click the button, I'm having the following error:
Error 500--Internal Server Error
javax.faces.el.EvaluationException: Method not found: Hello.execute(javax.faces.event.ActionEvent)
     at org.apache.myfaces.trinidadinternal.taglib.util.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:58)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.broadcastToMethodBinding(UIXComponentBase.java:1227)
     at org.apache.myfaces.trinidad.component.UIXCommand.broadcast(UIXCommand.java:183)
     at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent$1.run(ContextSwitchingComponent.java:70)
... (I've truncated the log because there is nothing important in the missing part)

Answer 1

Yes, I have binding in the page def. Everything is correct there:
<methodAction id="Hello" RequiresUpdateModel="true" Action="invokeMethod"
MethodName="Hello" IsViewObjectMethod="false"
DataControl="PriceServiceLocal"
InstanceName="PriceServiceLocal.dataProvider"/>
I've droped the method from the Data Controls panel