Sharepoint 2003 SPList and make Title field not mandatory

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Hi,

I try to make "Title" field not mandatory programmatically in a custom
SPList.

Here is the code I use:

myWeb.AllowUnsafeUpdates = true;
myList.Fields["Title"].Required = false;
myList.Update();
myWeb.AllowUnsafeUpdates = false;


I have no error but this code remains without any effect. Title field
is still mandatory...

Do someone already observed something like this ?
Is there another solution, except the manual way ?

Best regards,
Patrick Sola.

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