IPP .NET DevKit v2 - QBD VendorCredit Create

//Create VendorCredit
Intuit.Ipp.Data.Qbd.VendorCredit vendorCredit = new Intuit.Ipp.Data.Qbd.VendorCredit();

//Header
Intuit.Ipp.Data.Qbd.VendorCreditHeader vendorCreditHeader = new Intuit.Ipp.Data.Qbd.VendorCreditHeader();
vendorCreditHeader.DocNumber = "2726FC849FB";
vendorCreditHeader.TxnDate = new DateTime(2012, 10, 12);
vendorCreditHeader.Note = "Expense Report 10/12/2012 #2";
vendorCreditHeader.VendorName = "Track Vendor";
vendorCreditHeader.TotalAmt = (decimal)-18.00;
vendorCreditHeader.APAccountName = "Accounts Payable";
vendorCredit.Header = vendorCreditHeader;

//Line Item
Intuit.Ipp.Data.Qbd.VendorCreditLine vendorCreditLine = new Intuit.Ipp.Data.Qbd.VendorCreditLine();
vendorCreditLine.Desc = "Advertising:";
vendorCreditLine.Amount = (decimal)18.00;
vendorCreditLine.AmountSpecified = true;
//vendorCreditLine.Items = new object[] { new Intuit.Ipp.Data.Qbd.IdType() { idDomain = Intuit.Ipp.Data.Qbd.idDomainEnum.QB, Value = "6" }, "Sales" };
//vendorCreditLine.ItemsElementName = new Intuit.Ipp.Data.Qbd.ItemsChoiceType1[] { Intuit.Ipp.Data.Qbd.ItemsChoiceType1.AccountId, Intuit.Ipp.Data.Qbd.ItemsChoiceType1.AccountName };
vendorCreditLine.Items = new object[] { "Sales" };
vendorCreditLine.ItemsElementName = new Intuit.Ipp.Data.Qbd.ItemsChoiceType1[] { Intuit.Ipp.Data.Qbd.ItemsChoiceType1.AccountName };
vendorCredit.Line = new Intuit.Ipp.Data.Qbd.VendorCreditLine[] { vendorCreditLine };

Intuit.Ipp.Data.Qbd.VendorCredit addedVendorCredit = commonService.Add<Intuit.Ipp.Data.Qbd.VendorCredit>(vendorCredit);