Token     = "6129457865:AAFyzNYOAFbu...";
    ChatID    = "461699897";
    ChannelID = "@testsichee";
    Text      = "Строковое значение";

    KeyboardButtonsArray = New Array;
    KeyboardButtonsArray.Add("Button1");
    KeyboardButtonsArray.Add("Button2");

    Keyboard = OPI_Telegram.FormKeyboardFromButtonArray(KeyboardButtonsArray, True);
    Result   = OPI_Telegram.SendTextMessage(Token, ChatID, Text, Keyboard);

    Result = OPI_Telegram.SendTextMessage(Token, ChannelID, Text);