Richfaces 4.2.2 HOW TO: set the fileuploadlistener?

[sadfaces]

Based on the 4.x show case, I have:

fileupload.xhtml:

...
<rich:fileUpload fileUploadListener="#{fsBean.uploadListener}"
                                                  id="upload"
                                                  maxFilesQuantity="10">
                                                  <a4j:ajax event="uploadcomplete" execute="#{fsBean.doUpload()}" render="info" />
                                        </rich:fileUpload>
...

fsBean:

@Named("fsBean")
@Scope("request")
public class FileServiceBean implements Serializable {
          private List<BpFile> files = new ArrayList<BpFile>();
  
          @Inject
          private IFileService iFileService;
  
          public void uploadListener(FileUploadEvent event) throws Exception {
                    System.out.println("uploadListener");
                    // get the uploaded file from richfaces
                    UploadedFile item = event.getUploadedFile();
  
                    // create the BpFile
                    BpFile file = new BpFile();
                    file.setLength(item.getData().length);
        file.setName(item.getName());
        file.setData(item.getData());
        
        // add the file to upload list
        files.add(file);
          }
  
          public void doUpload() {
                    System.out.println("doUpload()");
          }
  
          public void clearUploadData() {
        files.clear();
    }

......

I ran this webapp in tomcat7, when I was trying to open the page, I got the following error:

javax.el.PropertyNotFoundException: Property 'uploadListener' not found on type abc.xyz.FileServiceBean

Any one here could help please, I am totally new to everything. Thanks heaps in advance.

[sadfaces]

ok, so what I have done to pass this exception for testing is super ugly. I added those lines to FileServiceBean:

public void setListener(Object obj){}

public Object getListener() {return new Object();}

it now works as expected so far. I am not sure if there will be any potentially fatal defects by doing this.

I hope anyone here can provide me a clean solution will be appreciated.