I don't know the answer to that, the documentation for that module makes it sound like only objects like buttons and links expose a "Click()" method. However, many modern dynamic web pages are built using AJAX requests, and there's probably a better way to go about this.

I've had success with Firefox and plugins like Firebug, or LiveHTTPHeaders. With those you can watch which http requests are generated as you click around the application to your destination, and you may find that there is a direct URL that contains the data, or performs the action that you are looking to duplicate.