Get custom field line item value using C#

Howdy,

I'm working on my first NS project and can't seem to find the answer so I'd appreciate some help.

I'm using the ERP sample code and can retrieve Sales Orders and their Line items.  The line items have custom fields defined and I can't seem to figure out how to get their value.  I can get the normal fields. I've tried adding the fields at the so and item level both with no luck.  Below is the code.   Thanks a lot...

if (so.itemList != null)
            {
                for (int i = 0; i < so.itemList.item.Length; i++)
                  {
                    SalesOrderItem item = new  SalesOrderItem();