How should I do that I can set the file creation date and time? about choetl.nacha HOT 2 CLOSED

ChoActivator.Factory = (t, args) =>
{
    if (t == typeof(ChoNACHAFileHeaderRecord))
    {
        var header = new ChoNACHAFileHeaderRecord();
        header.Initialize();

        //Overrride any values here...
        header.FileCreationDate = DateTime.Today.AddDays(100);
        return header;
    }
    return null;
};

using (var nachaWriter = new ChoNACHAWriter(@"ACH.txt", config))
{
    nachaWriter.WriterHandle.BeforeRecordWrite += (o, e) =>
    {
        var rec = e.Record as ChoNACHAFileHeaderRecord;
        if (rec != null)
            rec.FileCreationDate = DateTime.Today.AddDays(100);
    };
}