Inserting record in a MS SQL server table

I have a fillable form that after saved i have the following code to insert a record in a table in MS SQL Server:
 
// Logica para escribir la tabla de indices
xfa.sourceSet.Indices.open();
xfa.sourceSet.Indices.addNew();
 
if (Inicial.rawValue == null)

{Inicial.rawValue = " "}
 
$record.Indices.Nombre.value = Apellidos.rawValue + ", " + Nombre.rawValue + " " + Inicial.rawValue;
$record.Indices.NumdeCuenta.value = NumerodeCuenta.rawValue;
$record.Indices.SeguroSocial.value = SSN.rawValue;
$record.Indices.Licencia.value = Lic.rawValue;
$record.Indices.IdentificacionAlterna.value = String(NumerodeIdentificacionAlterna.rawValue);
$record.Indices.NumdeCelular.value = PhoneNum.rawValue;
$record.Indices.NumdeContrato.value = FormId.rawValue;
$record.Indices.FechadeServicio.value = FechadeServicioPrevio.rawValue;
$record.Indices.IMEI.value = String(IMEI.rawValue);
$record.Indices.SIM.value = String(ICCID.rawValue);
$record.Indices.NombreRepresentante.value = NombredelRep.rawValue;
$record.Indices.Localidad.value = Localidad.editValue;
$record.Indices.Lifeline.value = "No";
if ((String(PlandeVoz.rawValue).substr(1,2)) == 13)
{
$record.Indices.Lifeline.value = "Yes";
}
$record.Indices.TipodeForma.value = "Enmienda";
$record.Indices.Procesado.value = "0";
 
// xfa.host.messageBox("PhoneNum.rawValue " + PhoneNum.rawValue); // temp debug
// xfa.host.messageBox("$record.Indices.Identificacion.value " + $record.Indices.Identificacion.value); // temp debug
// xfa.host.messageBox("$record.Indices.IMEI.value " + $record.Indices.IMEI.value); // temp debug
// xfa.host.messageBox("$record.Indices.SIM.value " + $record.Indices.SIM.value); // temp debug
 
xfa.sourceSet.Indices.update();
xfa.sourceSet.Indices.close();
// hasta aquí
  
The form will be used concurrently by more than 50 users.
 
My question is:
 
1- Is that the correct code to avoid locking of the table?
 
2- Do I have to use the following:
xfa.sourceSet.Indices.nodes.item(1).query.recordSet.lockType = "optimistic";
 
3- Is that the more efficient way to code it?
 
Please give me your comments and advise.
 
Thanks