i've got the following error: "The model item passed into the dictionary is of type 'W3S.Controllers.ViewModelAgenda', but this dictionary requires a model item of type 'Umbraco.Web.Models.RenderModel'."

the example is pretty clear (last example): http://our.umbraco.org/documentation/Reference/Mvc/custom-controllers

and my code is this but still the problem? can somebody help me?

namespace W3S.Controllers
{
    public class AgendaController : RenderMvcController
    {
        //
        // GET: /Agenda/

        public ActionResult Agenda(RenderModel model)
        {
            ViewBag.Title = model.Content.Name;

            var vmAgenda = new ViewModelAgenda();
            //Items.UModel = Model;
            vmAgenda.Related = (String) model.Content.GetProperty("related").Value;
            vmAgenda.Related2 = (String) model.Content.GetProperty("related2").Value;
            vmAgenda.Related3 = (String) model.Content.GetProperty("related3").Value;
            vmAgenda.Related4 = (String) model.Content.GetProperty("related4").Value;
            vmAgenda.Related5 = (String) model.Content.GetProperty("related5").Value;
            vmAgenda.Related6 = (String) model.Content.GetProperty("related6").Value;

            UmbracoHelper help = new UmbracoHelper(UmbracoContext);
            ViewModelAgendaItems SubItems = new ViewModelAgendaItems();
            SubItems.SubItems = help.TypedContent(model.Content.GetProperty("related6").Value.ToString().Split(','));
            vmAgenda.Items = SubItems;

            return CurrentTemplate(vmAgenda);
        }
    }
    public class ViewModelAgenda {
        //public RenderModel UModel {get;set;}
        public String Related {get;set;}
        public String Related2 {get;set;}
        public String Related3 {get;set;}
        public String Related4 {get;set;}
        public String Related5 {get;set;}
        public String Related6 {get;set;}
        public ViewModelAgendaItems Items { get; set; }
    }
    public class ViewModelAgendaItems {
        public IEnumerable<IPublishedContent> SubItems { get; set; }
        public IPublishedContent SubSubItems { get; set; }
    }
}

@inherits Umbraco.Web.Mvc.UmbracoViewPage<W3S.Controllers.ViewModelAgenda>
@{
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Agenda2</h2>
1 @Model.Related<br />
2 @Model.Related2<br />
3 @Model.Related3<br />
4 @Model.Related4<br />
5 @Model.Related5<br />
6 @Model.Related6<br />


@foreach (var node in Model.Items.SubItems) {
    <div>
        <h3>@node.GetProperty("detailTitel")</h3>
        @node.GetProperty("link")
      
    </div>
}