Insert Revision Cloud into a Drawing Example (C#)

//----------------------------------------------------------------------------
// Preconditions: Open:
//    install_dir\samples\tutorial\api\resetsketchvisibility.slddrw
//
// Postconditions: An elliptical revision cloud is inserted in the drawing.
//
// NOTE: Because the model is used elsewhere,
// do not save changes when closing it.
// ---------------------------------------------------------------------------
using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System.Runtime.InteropServices;
namespace InsertRevisionCloud_CSharp.csproj
{
    partial class SolidWorksMacro
    {

        DrawingDoc Part;
        RevisionCloud RevCloud;
        Annotation RevCloudAnno;

        bool boolstatus;

        public void Main()
        {
            Part = (DrawingDoc)swApp.ActiveDoc;
            boolstatus = Part.ActivateView("Drawing View1");

            // Create a revision cloud with an elliptical shape
            RevCloud = (RevisionCloud)Part.InsertRevisionCloud(1);
            if ((RevCloud != null))
            {
                RevCloudAnno = (Annotation)RevCloud.GetAnnotation();
                if ((RevCloudAnno != null))
                {
                    // Position the center of the elliptical revision cloud
                    boolstatus = RevCloudAnno.SetPosition(0.270847371964905, 0.553263328912467, 0);
                    RevCloud.ArcRadius = 0.00508;
                    // Create a path point on the corner of an ellipse-inscribed rectangle
                    boolstatus = RevCloud.SetPathPointAtIndex(-1, 0.378419710263212, 0.511051398694144, 0);
                    // Close the revision cloud path
                    boolstatus = RevCloud.Finalize();
                }
            }

        }


        public SldWorks swApp;

    }
}