How do I add pdf text annotation review status using itextsharp?

I am working using itextsharp in c# .net. I have multiple text annotation and multiple reply to that annotation, everything working fine but when i try to add review status (Eg: Accepted,Rejected,None etc..) to the annotation. It is not showing in pdf.

I had export the data file from pdf and checked. Annotation's review status is coming in data file. If i changed the status flag of annotation review status /F 28/ to /F 30/ in data file,review status showing correctly in pdf.

How do i set status flag of annotation as /F 30/. I tried all annotation flag in itextsharp /F 30/ not coming.

2 0 obj /Contents(brit mkt level 1 no 5)/F 28/M(D:20160928170753+05'30') NM(1888890568)/Page 0/Rect[231.0 605.0 249.0 625.0]/Subtype/Text/T(BM/01 Britania marketing | Marketing)

7 0 obj /Contents(None by Britania commercial)/F 28/IRT(1888890568)/M(D:20161006111625+05'30')/NM(63aafcf6-742e-4ffb-9465-2dba3c731bf2)/Page 0/Popup 8 0 R/Rect[231.0 605.0 249.0 625.0]/State(None)/StateModel(Review)/Subtype/Text/T(Britania commercial) endobj 

8 0 obj /F 28/Open false/Page 0/Parent 7 0 R/Rect[2160.0 505.0 2340.0 625.0]/Subtype/Popup/Type/Annot endobj

if (noteArray.Count == 1)
                    {
                        var fstTemp = new MemoryStream();
                        var stamper = new PdfStamper(reader, fstTemp);
                        if (!string.IsNullOrEmpty(reviseStatus))
                        {
                            var writer = stamper.Writer;
                            var page = reader.GetPageN(pageNo);
                            var annots = page.GetAsArray(PdfName.ANNOTS);
                            var count = annots.Size;
                            var notes = (Dictionary<string, object>) noteArray[0];
                            for (var l = 0; l < count; l++)
                            {
                                var sticky = annots.GetAsDict(l);
                                var cmntid = sticky.Get(PdfName.NM);
                                if ((cmntid !=null?cmntid.ToString() : "") == notes["commentId"].ToString())
                                {
                                    var stickyRect = sticky.GetAsArray(PdfName.RECT);
                                    var stickyRectangle =
                                      new iTextSharp.text.Rectangle(
                                          stickyRect.GetAsNumber(0).FloatValue,
                                          stickyRect.GetAsNumber(1).FloatValue,
                                          stickyRect.GetAsNumber(2).FloatValue,
                                          stickyRect.GetAsNumber(3).FloatValue);
                                    var replySticky = PdfAnnotation.CreateText(writer,
                                        stickyRectangle,
                                        revisedBy, reviseStatus + " by " + revisedBy, true, null);
                                    replySticky.Put(PdfName.IRT, annots.GetAsIndirectObject(l));
                                    replySticky.Put(PdfName.M,new PdfDate(convertTimestamp(Double.Parse(revisedOn))));
                                    replySticky.Put(PdfName.STATE, new PdfString(reviseStatus));
                                     var n = sticky.GetAsNumber(PdfName.F);
                                    replySticky.Put(PdfName.F, new PdfNumber(n.IntValue |PdfAnnotation.FLAGS_HIDDEN)); //PdfAnnotation.FLAGS_HIDDEN
                                    replySticky.Put(PdfName.OPEN,PdfBoolean.PDFFALSE);
                                    replySticky.Put(new PdfName("StateModel"), new PdfString("Review"));
                                    var canvas = stamper.GetOverContent(pageNo);
                                    canvas.AddAnnotation(replySticky,true);
                                }
                            }
                        }
                        fout = fstTemp;
                        stamper.Close();
                        reader = new iTextSharp.text.pdf.PdfReader((byte[]) fout.ToArray());                        
                    }