Display Primary Contact (from vendor) in Purchase Order just like in Sales Orders

​@Manikanta Dhulipudi 

is it possible that UsrContact takes automatcly the (primary) Contact from Vendor ?

DAC:

public class POOrderExt : PXCacheExtension<PX.Objects.PO.POOrder>
    {
        #region UsrContact
        [PXDBInt]
        [PXUIField(DisplayName="Contact")]
        [PXSelector(typeof(Search<Contact.contactID, Where<Contact.bAccountID, Equal<Current<POOrder.vendorID>>>>),
        SubstituteKey = typeof(Contact.contactID),DescriptionField = typeof(Contact.displayName),  Filterable = true)]
        public virtual int? UsrContact { get; set; }
        public abstract class usrContact : PX.Data.BQL.BqlInt.Field<usrContact> { }
        #endregion
    }

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Aspx:
    <px:PXSelector runat="server" ID="CstPXSelector1" DataField="UsrContacts" AutoRefresh="true" CommitChanges="true"/>