OpenIntegrations/docs/en/examples/Telegram/OpenForumTopic.txt

    Token = "6129457865:AAFyzNYOAFbu...";
    Chat  = "-1001971186208";
    Topic = "7553";

    Result = OPI_Telegram.OpenForumThread(Token, Chat); // Opens main topic

    Result = OPI_Telegram.OpenForumThread(Token, Chat, Topic);