Token     = "6129457865:AAFyzNYOAFbu...";
    ChatID    = "461699897";
    MessageID = "15786";

    ButtonArray = New Array;
    ButtonArray.Add("New button 3");
    ButtonArray.Add("New button 2");
    ButtonArray.Add("New button 1");

    Keyboard = OPI_Telegram.FormKeyboardFromButtonArray(ButtonArray, True, False);

    Result = OPI_Telegram.ReplaceMessageKeyboard(Token, ChatID, MessageID, Keyboard);