using PX.Data;
using PX.Objects.CR;
using PX.Objects.CS;
using PX.Objects.EP;
using PX.Objects.FA;
using PX.Objects.GL;
using PX.Objects;
using System.Collections.Generic;
using System;

namespace SGLCustomizeProject
{
    public class FALocationHistoryExtension : PXCacheExtension<PX.Objects.FA.FALocationHistory>
    {
        #region UsrKodeArea
        [PXString]
        [PXUIField(DisplayName = "Kode Area")]
        [PXSelector(typeof(Search<KodeAreaMaster.roomCD, Where<KodeAreaMaster.status, Equal<statusActive>>>),
                typeof(KodeAreaMaster.roomCD),
                typeof(KodeAreaMaster.roomDescription),
                typeof(KodeAreaMaster.status))]
        public virtual string UsrKodeArea { get; set; }
        public abstract class usrKodeArea : IBqlField { }
        #endregion
    }
}

<px:PXSelector ID="edBuildingID" runat="server" DataField="BuildingID" CommitChanges="true" DisplayMode="Text" />

[PXSelector(typeof(Search<KodeAreaMaster.roomCD,
Where<KodeAreaMaster.status, Equal<statusActive>,
    And<KodeAreaMaster.buildingID,
        , such asEqual<Current<RoomMaster.buildingID>>>>>),
            typeof(KodeAreaMaster.roomCD),
            typeof(KodeAreaMaster.roomDescription),
            typeof(KodeAreaMaster.status))]