title: view filter in the help doesn't work
body: <p>I am trying to run the code that on the Autodesk help </p>
  
  <p><a href="http://help.autodesk.com/view/RVT/2014/ENU/?guid=GUID-B6FB80F2-7A17-4242-9E95-D6056090E85B" rel="nofollow noreferrer">http://help.autodesk.com/view/RVT/2014/ENU/?guid=GUID-B6FB80F2-7A17-4242-9E95-D6056090E85B</a>
   but it seem not to work. The code "FirstElement
          ().get_Parameter("Comments");"
  don't work. No such function.</p>
  
  <p>I got the following error:</p>
  
  <blockquote>
    <p>Revit encoutered a System.MissingMethodException; Method not found:'AutoDesk.Revit.DB.Parameter Autodesk.Revit.DB.Element.get_Parameter(System.String)</p>
  </blockquote>
  
  <p>What is the wrong with this code?</p>
  
  <pre><code>  private void CreateViewFilter(Autodesk.Revit.DB.Document doc, View view)
      {
      List&lt;ElementId&gt; categories = new List&lt;ElementId&gt;();
      categories.Add(new ElementId(BuiltInCategory.OST_Walls));
      ParameterFilterElement parameterFilterElement = 
      ParameterFilterElement.Create(doc, "Comments = foo", categories);
  
      FilteredElementCollector parameterCollector = new FilteredElementCollector
      (doc);
      Parameter parameter = parameterCollector.OfClass(typeof(Wall)).FirstElement
      ().get_Parameter("Comments");
  
      List&lt;FilterRule&gt; filterRules = new List&lt;FilterRule&gt;();
      filterRules.Add(ParameterFilterRuleFactory.CreateEqualsRule  
      (parameter.Id, "foo", true));
        parameterFilterElement.SetRules(filterRules);
  
  
       OverrideGraphicSettings filterSettings = new OverrideGraphicSettings();
      // outline walls in red            
      filterSettings.SetProjectionLineColor(new Color(255, 0, 0));
      view.SetFilterOverrides(parameterFilterElement.Id, filterSettings);
      }
  </code></pre>