I have a .aspx page in /DynamicData/CustomPages called ArticleViewer.aspx

Global.asax looks like this:

routes.Add(new DynamicDataRoute("Articles / {slug}")
        {
            Action="ArticleViewer"
        });
        
        routes.Add(new DynamicDataRoute("{table}/{action}.aspx") {
            Constraints = new RouteValueDictionary(new { action = "List|Details|Edit|Insert" }),
            Model = model
        });

I want my url to look like this: http://mysite/articles/somearticle

I only get 404 - what am I doing wrong?

Thanks