change Addressee/Attention in Addressbook

Hi

Hope someone could help me with this netsuite script in
Customer User Event :

I try to change the value in Addressee or Attention field in Addressbook
using the following code :

METHOD 1:
   var rec = nlapiGetNewRecord();
   var customerId  = rec.getId();
   var custo=nlapiLoadRecord('customer',customerId);
   custo.selectNewLineItem('addressbook');
   custo.setCurrentLineItemValue('addressbook','addressee','My addressee Name');
   custo.commitLineItem('addressbook');
   nlapiLogExecution('debug', 'modify addressee', ' id::' + customerId  );
  
  
METHOD 2:  
   custo.SelectLineItem('addressbook',1);   
   nlapiSetCurrentLineItemValue('addressbook','addressee', 'Bill Contact');
   nlapiCommitLineItem('addressbook'); 
   nlapiLogExecution('debug', 'Change addressee in Billing', ' id::' + customerId  );
  
METHOD 3:  
    nlapiSubmitField('customer',customerId,'billaddressee', 'Biller Name');  


I have execute all methods above and have no error, Look like it saves the value to Sandbox. But when I review the address record, the value does not change at all. Still exactly the same as before.