@foreach (var p in Model.Pages)
        {
            foreach (var s in p.Fieldsets)
            {
                foreach (var c in s.Containers)
                {
                    foreach (var a in c.Fields)
                    {
                         if (a.Alias == "longitude")
                        {
                            <input type="hidden" id="@a.Alias" name="@a.Alias" value="@a.ValueAsHtmlString">
                        }
                      }
                  }
              }
          }