Problem with Html.ListBoxFor

See more:

C#

MVC

View

@{
      int[] userRoles;
      int iterator = 0;

      foreach (Models.webpages_Roles userRole in Model)
      {
          userRoles[iterator++] = userRole.RoleId;
      }


  }
  <li>@Html.ListBoxFor(userRoles , (MultiSelectList)ViewBag.MyRoles))</li>

Controller

<pre lang="xml">[InitializeSimpleMembership]
        public ActionResult Users()
        {
            var Model = Securitydb.UserProfiles.ToList();

            var list = new List<SelectListItem>();
            foreach (Models.webpages_Roles databaseRole in Securitydb.webpages_Roles.ToArray())
            {
                list.Add(new SelectListItem(){Text = databaseRole.RoleName, Value = databaseRole.RoleId.ToString()});
            }

            var multilist = new MultiSelectList(list);


            ViewBag.MyRoles = multilist;

            return View(Model);
        }</pre>

throws: The type arguments for method 'System.Web.Mvc.Html.SelectExtensions.ListBoxFor<TModel,TProperty>(System.Web.Mvc.HtmlHelper<TModel>, System.Linq.Expressions.Expression<System.Func<TModel,TProperty>>, System.Collections.Generic.IEnumerable<System.Web.Mvc.SelectListItem>)' cannot be inferred from the usage. Try specifying the type arguments explicitly.

What is wrong with it? I've tried passing

List<SelectListItem>

and

List<int>

too in various configurations but to no avail.