Adding Last Name to Payroll Payment Screen

Hi Greg

Can you try 

[PXDBScalar(typeof(Search<Contact.LastName, Where<Contact.bAccountID, Equal<PRPayment.EmployeeID>>>))]

Instead of PXFormula

Also, you might just need to have that field unbound (PXString)

Still coming up with a blank field on the screen.  How would I change it to unbound text?

namespace PX.Objects.PR
{
  public class PRPaymentExt : PXCacheExtension<PX.Objects.PR.PRPayment>
  {
    #region UsrLastname
    [PXString]
    [PXUIField(DisplayName="Last Name")]
    [PXDBScalar(typeof(Search<Contact.lastName, Where<Contact.bAccountID, Equal<PRPayment.employeeID>>>))]
    public virtual string UsrLastname { get; set; }
    public abstract class usrLastname : PX.Data.BQL.BqlString.Field<usrLastname> {}
    #endregion
  }
      }

Apologies Greg,

It did not work because it has a method

(...\App_Data\CodeRepository\PX.Objects.PR\PRDocumentProcess.cs)

You have to override 

public class PRDocumentProcess_Extension : PXGraphExtension<PRDocumentProcess>
{
   public delegate IEnumerable DocumentListDel();
   [PXOverride]
   public IEnumerable documentList(DocumentListDel delDocumentList)
   {
      List<object> result = delDocumentList()
      foreach(PRPayment line in result)
      {
         line.UsrLastName = GetLastName(line.EmployeeID);
      }
   }
}

I see…  Think I have a type here that I can’t seem to figure out though.  I’m getting a CS1002 error for the line List<object> result = delDocumentList()

using PX.Data.BQL.Fluent;
using PX.Data.EP;
using PX.Data.ReferentialIntegrity.Attributes;
using PX.Data;
using PX.Objects.AP;
using PX.Objects.CA;
using PX.Objects.CM;
using PX.Objects.CS;
using PX.Objects.EP;
using PX.Objects.GL;
using PX.Objects.PR;
using PX.Objects.CR.MassProcess;
using PX.Objects.CR.Workflows;
using PX.Objects.CR;
using PX.Objects;
using System.Collections.Generic;
using System;

namespace PX.Objects.PR
{
  public class PRDocumentProcess_Extension : PXGraphExtension<PRDocumentProcess>
  {
   public delegate IEnumerable DocumentListDel();
   [PXOverride]
   public IEnumerable documentList(DocumentListDel delDocumentList)
   {
      List<object> result = delDocumentList()
      foreach(PRPayment line in result)
      {
         line.UsrLastName = GetLastName(line.EmployeeID);
      }
   }
  }
  public class PRPaymentExt : PXCacheExtension<PX.Objects.PR.PRPayment>
  {
    #region UsrLastname
    [PXString]
    [PXUIField(DisplayName="Last Name")]

    [PXDBScalar(typeof(Search<Contact.lastName, Where<Contact.bAccountID, Equal<PRPayment.employeeID>>>))]
    public virtual string UsrLastname { get; set; }
    public abstract class usrLastname : PX.Data.BQL.BqlString.Field<usrLastname> {}
    #endregion
  }
      }

Thank you that worked like a charm...