Echo Web Framework

Yes, that's right. But when you click into the address bar and type something behind the uri or change some parameters the application is reloaded and the IntiialParamterMap is not updated, if the application already instantiated. The other problem is, that you are not able to receive an event if this occurs.
Why do I need this functionality? Simple, I want to code a shop with echo2. There I have some articles and the primary identifier for the article can be placed into the url to receive informations about this article.
Now there are to cases:
1. This is the first request to echo2. A new application is created and I parse the return of WebRenderServlet.getActiveConnection().getRequest().getRequestURI().
2. The application instance already created and an event is raised that the site was rendered from the beginning. Here I need to check if the URL was changed since last request or since application creation.
If there is a change to the URL I need to parse it. If it contains a valid article identifier I need to change the view of my application.

WindowHtmlEventMonitor wem = new WindowHtmlEventMonitor();
wem.addExternalEventListener(new WindowHtmlEventListener() {
  public void windowHtmlEvent(WindowHtmlEvent arg0) {
    System.out.println(arg0.getUri());
  }
});
some_column.add(wem);

With the ExternalEventMonitor I had problems with the first request. The first request may not contain the ServiceId=ExternalEvent. This gives some problems. But further request to the application must contain the ServiceId=ExternalEvent. This make Problems to for someone who want to make a link to an article ... like search engines or else.