[Zope3-Users] preferences question

[YEU-JIUN WANG]

Hi,

I use preference like this way:

<preferenceGroup
         id="UserSettings.Billing"
         title="Billing Information"
         schema=".user.IUserBillingInfo"
         />

and after the form was summit and validated, the error messages was 
shown but the
input value on the form was back to the original value of the context. 
My question is
how could I keep the input values the user entered after the validation 
error like all the
other schema based form mechanism.

Thanks!