Making Nillable="false" for WSDL elements

Hi all,

How can I make the nillable =“false” for WSDL element types.

When I generate the wsdl for a provider from a IS Service,it always generates with nillable =“true” when Required=“true” and AllowNull=“true”

Even when I change allow Null to “false” or play around it with diff possible options ,it still does not generate nillable=“false”

Is there any work around to make nillable =“false”

Please advise