internal class DailyTrackerPage
 {
 public string Title { get; set; }
 public bool? Done { get; set; }
 public DateTime CreatedTime { get; set; }
 public RichTextMention Mention { get; set; }
 public DailyTrackerPage(Page page)
 {
 CreatedTime = page.CreatedTime;
 Done = page.Properties[nameof(Done)] is FormulaPropertyValue formula ? formula.Formula.Boolean : default;
 TitlePropertyValue? title1 = page.Properties[nameof(Title)] as TitlePropertyValue;
 Mention = title1.Title.FirstOrDefault() is RichTextMention mention ? mention : default;
 DateTime dateTime = Convert.ToDateTime(Mention.PlainText);
 Mention.Mention.Date = new DatePropertyValue { Date = new Date { Start = dateTime } };
 Title = page.Properties[nameof(Title)] is TitlePropertyValue title
 ? string.Join(null, title.Title.Select(x => x.PlainText))
 : string.Empty;
 }
 }

private static async Task UpdateProperty(Page? page)
 {
 if (page != null)
 {
 DailyTrackerPage trackerPage = new(page);
 var newTitle = new List<RichTextBase> { { trackerPage.Mention }, { new RichTextBase { PlainText = "Voc30" } } };
 if (trackerPage.Title.Contains("Voc"))
 {
 await Console.Out.WriteLineAsync($"Title{trackerPage.Title} ID:{page.Id}").ConfigureAwait(false);
 await MyClient.Client.Pages.UpdatePropertiesAsync(page.Id, new Dictionary<string, PropertyValue>
 {
 { "Title", new TitlePropertyValue() { Title = newTitle } }
 }).ConfigureAwait(false);
 }
 }
 }