Can't get State and Country from Sales Order

How do I get address info from the customer record?
This is what I am trying right now.


var customerID = nlapiGetFieldValue( 'entity' );   
        alert('Customer internal ID '+customerID)
       
        var filters = new Array();
           filters[0] = new nlobjSearchFilter('internalid', null, 'anyof', 'customerID' , null );
           var customerRecord = nlapiSearchRecord('customer', null, filters, null );
           alert('Customer record is '+customerRecord)
                    
        for ( var i = 1; i <= customerRecord.nlapiGetLineItemCount('addressbook'  ); i++ );
        {
              var isDefaultShipping = customerRecord.nlapiGetLineItemValue( 'addressbook', 'defaultshipping', i )
            if ( isDefaultShipping == 'T')
            {   
                var shipCountry = customerRecord.nlapiGetLineItemValue( 'addressbook', 'country', i )
                var shipState = customerRecord.nlapiGetLineItemValue( 'addressbook', 'state', i )   
            }
        }   
       
        alert('Customer country is '+country)
        alert('Customer country is '+state)