I'm a newbie in Infopath.

I've created a small webservice with Visual Basic.Net for comunicate
with an Access DB.

In the VB Code there is a Type called "Census" like this:

Public Class Census
   Public ID as Int32
   Public DateBirth as Date
   Public Name as String
End  Class

If I look to the WSDL it seems like this:

<s:complexType name="Census">
   <s:sequence>
      <s:element minOccurs="1" maxOccurs="1" name="ID" type="s:int"/>
      <s:element minOccurs="1" maxOccurs="1" name="DateBirth"
type="s:dateTime"/>
      <s:element minOccurs="0" maxOccurs="1" name="Name" type="s:string"/>
   </s:sequence>
</s:complexType>

I would like that minOccurs for ID and DateBirth is 0 not 1 so that in
Infopath I'm not obliged to insert a value for it. Alternatively I need
a way to obviate this problem

How can I do this??

Thanks for replying and excuse me for my bad english.