RichFaces fileUpload does not call the listener

I'm using the latest version of RichFaces, I've copied the show case example on the RichFaces website, and the example does not invoke the listener, I tried everything, could anyone help me?

xhtml

<rich:fileUpload fileUploadListener="#{fileUploadBean.listener}"
            id="upload" acceptedTypes="jpg, gif, png, bmp"
            maxFilesQuantity="5">
            <a4j:ajax event="uploadcomplete" execute="@none" render="info" />
        </rich:fileUpload>

Bean

@ManagedBean
@SessionScoped
public class FileUploadBean implements Serializable {
private ArrayList<UploadedImage> files = new ArrayList<UploadedImage>();

public void paint(OutputStream stream, Object object) throws IOException {
    stream.write(getFiles().get((Integer) object).getData());
    stream.close();
}

public void listener(FileUploadEvent event) throws Exception {
    System.out.println("&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& - LISTENER");
    UploadedFile item = event.getUploadedFile();
    UploadedImage file = new UploadedImage();
    //file.setLength(item.getData().length);
    file.setName(item.getName());
    file.setData(item.getData());
    files.add(file);
}

public String clearUploadData() {
    files.clear();
    return null;
}

public int getSize() {
    if (getFiles().size() > 0) {
        return getFiles().size();
    } else {
        return 0;
    }
}

public long getTimeStamp() {
    return System.currentTimeMillis();
}

public ArrayList<UploadedImage> getFiles() {
    return files;
}

public void setFiles(ArrayList<UploadedImage> files) {
    this.files = files;
}

}

Web.xml

<context-param>
    <param-name>org.richfaces.fileUpload.maxRequestSize</param-name>
    <param-value>10000000</param-value>
</context-param>


<context-param>
    <param-name>org.richfaces.fileUpload.createTempFiles</param-name>
    <param-value>true</param-value>
</context-param>