How to add waybill number , while doing Ship Confirm Interface Using Standard API

Hi All,

I'm using the below API to do the ship Confirm Interface. And now I need to pass(use) waybill_number while doing ship COnfirm.
But I Couldn't find out the variable in the record type in this ship confirm standard API.

 API:- apps.wsh_delivery_details_pub.update_shipping_attributes
 

changed_attributes          wsh_delivery_details_pub.changedattributetabtype;

source_code := 'OE';

changed_attributes (1).delivery_detail_id := P_delivery_detail_id; -- Ship All quantities in this detail.
changed_attributes (1).shipped_quantity := p_upd_shipped_qty;                 
changed_attributes (1).subinventory := P_subinventory;                 
changed_attributes (1).freight_carrier_code := P_frieght_carrier_code;