sample code showing how to update comment on segment using integration API

UpdateCommentOnSegment.cs

var editorController = GetEditorController();
var segmentId = editorController.ActiveDocument.ActiveSegmentPair.Properties.Id.Id;
var c = editorController.ActiveDocument.GetCommentsFromSegment(segmentId);

editorController.ActiveDocument.UpdateCommentOnSegment(segmentId, c.ElementAt(0),
                                                        string.Format("U Comment {0}", ++_commentsCount),
                                                        Severity.Medium);