URL     = FunctionParameters["Bitrix24_URL"];
    FieldID = FunctionParameters["Bitrix24_HookTaskFieldID"];

    Result = OPI_Bitrix24.GetCustomTaskField(URL, FieldID);

    URL     = FunctionParameters["Bitrix24_Domain"];
    Token   = FunctionParameters["Bitrix24_Token"];
    FieldID = FunctionParameters["Bitrix24_TaskFieldID"];

    Result = OPI_Bitrix24.GetCustomTaskField(URL, FieldID, );