URL         = FunctionParameters["Bitrix24_URL"];
    ChatID      = FunctionParameters["Bitrix24_HookChatID"];
    File        = FunctionParameters["Document"]; // Binary Data, URL or path to file
    Description = "Very important file";

    Directory = OPI_Bitrix24.GetChatFilesFolder(URL, ChatID);
    FolderID  = Directory["result"]["ID"];

    UploadedFile = OPI_Bitrix24.UploadFileToFolder(URL, "Imortant doc.docx", File, FolderID);
    FileID       = UploadedFile["result"]["ID"];

    Result = OPI_Bitrix24.SendFile(URL, ChatID, FileID, Description);

    URL    = FunctionParameters["Bitrix24_Domain"];
    Token  = FunctionParameters["Bitrix24_Token"];
    ChatID = FunctionParameters["Bitrix24_ChatID"];

    Directory = OPI_Bitrix24.GetChatFilesFolder(URL, ChatID, Token);
    FolderID  = Directory["result"]["ID"];

    UploadedFile = OPI_Bitrix24.UploadFileToFolder(URL, "Imortant doc.docx", File, FolderID, Token);
    FileID       = UploadedFile["result"]["ID"];

    Result = OPI_Bitrix24.SendFile(URL, ChatID, FileID, Description, Token);