Adding multiple Address

Hi,

I have a issue related to Customer Address.

When i add two address and mention address type for each address like for address1 it should be default billing
address2 it should be default shipping

but it save address 1 as both as default shipping and billing in NetSuite.

My code is mentioned below.
  
           address[0].defaultShipping = true;
           address[0].defaultShippingSpecified = true;
           address[0].defaultBilling = false;
           address[0].defaultBillingSpecified = false;

           address[1].defaultBilling = true;
           address[1].defaultBillingSpecified = true;
           address[1].defaultShipping = false;
           address[1].defaultShippingSpecified = false; 

Regards

Binay