How to Change pdf Info.Creator in generated PDF

Hello,
When I do this with a Licenced Aspose.Pdf v7.2

Aspose.Pdf.License license = new Aspose.Pdf.License();
license.SetLicense("Aspose.Pdf.lic");

Aspose.Pdf.Document doc = new Aspose.Pdf.Document("...");
doc.Info.Producer = "fred";
doc.Info.Creator = "fred";
doc.Save("...");

After save in debugger I see that :
doc.Info.Producer = "Aspose.Pdf for .NET 7.2.0"; // This is Ok
doc.Info.Creator = "fred"; // This is Ok

But when I open the Pdf in Adobre Reader, or Reopen it with Aspose.Pdf v7.2 then

doc.Info.Producer = "Aspose.Pdf for .NET 7.2.0"; // This is Ok
doc.Info.Creator = "Aspose Ltd."; // No!!

How to "change" the Info.Creator information in the Pdf saved file?
Thank's for your help.

Hi Frederic,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Thank you for considering Aspose.Pdf.

Well, you cannot change the Producer or Creator properties while processing the document with Aspose.Pdf for .NET. Aspose.Pdf for .NET will always set Aspose.Pdf for .NET’s version as “Producer” and “Aspose Ltd.” as the “Creator” of the PDF document.

Sorry for the inconvenience,