ArrayOfUsers = New Array;
    ArrayOfUsers.Add("1");
    ArrayOfUsers.Add("10");

    URL    = "https://b24-ar17wx.bitrix24.by/rest/1/1o2...";
    TaskID = "1514";

    Result = OPI_Bitrix24.CheckTaskAccesses(URL, TaskID, ArrayOfUsers);

    URL    = "b24-ar17wx.bitrix24.by";
    Token  = "b529cb66006e9f06006b12e400000001000...";
    TaskID = "1516";

    Result = OPI_Bitrix24.CheckTaskAccesses(URL, TaskID, ArrayOfUsers, Token);