URL     = "https://b24-ar17wx.bitrix24.by/rest/1/h0m...";
    EventID = "1462";
    Status  = "Y";

    Result = OPI_Bitrix24.SetUserParticipationStatus(URL, EventID, Status);

    URL     = "b24-ar17wx.bitrix24.by";
    Token   = "11ae5d68006e9f06006b12e400000001000...";
    EventID = "1466";

    Result = OPI_Bitrix24.SetUserParticipationStatus(URL, EventID, Status, Token);