[jboss-user] [JBoss Seam] - cannot access method using seam and ejb3

[margas]

Hi,
I have a sample application (seam-ejb3-richfaces).
In one page i want to use   <rich:tabPanel> and a valueChangeListener so that to get events when i change tabs.
It seems that the valueChangeListener fires the events but when it tries to execute the method i get the following warning.
WARN  [lifecycle] /projecttype.xhtml @73,90 valueChangeListener="#{projecttype.changeTab}": Method not found: TProjecttypeAction:a00a-2idpbn-f71lr7w3-1-f71ls2aq-a.changeTab()

I post some code that can help :

Interface
@Local
  | public interface TProjecttypeInt {
  | 
  | 	
  | 	   String changeTab(ValueChangeEvent evtHandle);
Session Bean
@Stateful
  | @Name("projecttype")
  | @Scope (SESSION)
  | @Restrict("#{identity.loggedIn}")
  | public class TProjecttypeAction extends Search implements TProjecttypeInt{
  | 
  | 		public String changeTab(ValueChangeEvent evtHandle){
  | 			if (!evtHandle.getOldValue().toString().trim().equalsIgnoreCase("edit")){
  | 				if (currentPknId !=null && !currentPknId.trim().equalsIgnoreCase("")){
  | 					pknId = Integer.valueOf(currentPknId);
  | 					tProjecttype = em.find(TProjecttype.class, Integer.valueOf(currentPknId));	
  | 				}
  | 			}			
  | 			tabName = evtHandle.getNewValue().toString();
  | 			return "/projecttype.xhtml";
  | 		}
  | 

Page
		<rich:tabPanel selectedTab="#{tabName}" valueChangeListener="#{projecttype.changeTab}"> 

I cannot figure out why this happens if someone can give a hint 
thank you

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