OpenIntegrations/docs/en/examples/Bitrix24/MarkMessageAsUnreaded.txt

    URL       = FunctionParameters["Bitrix24_URL"];
    ChatID    = "chat" + FunctionParameters["Bitrix24_HookChatID"];
    MessageID = FunctionParameters["Bitrix24_ChatMessageID"];

    Result = OPI_Bitrix24.MarkMessageAsUnreaded(URL, ChatID, MessageID);

    URL       = FunctionParameters["Bitrix24_Domain"];
    Token     = FunctionParameters["Bitrix24_Token"];
    UserID    = 10;
    MessageID = FunctionParameters["Bitrix24_UserMessageID"];

    Result = OPI_Bitrix24.MarkMessageAsUnreaded(URL, UserID, MessageID, Token);