Not able to add the PXSelector correctly

I am trying to populate the dynamic material no based on this above report condition.

 

#region TransactionDate
            [PXDate()]
            [PXUIField(DisplayName = "Transaction Date")]
            [PXUnboundDefault(typeof(Today))]
            public virtual DateTime? TransactionDate { get; set; }
            public abstract class transactionDate :
                PX.Data.BQL.BqlDateTime.Field<transactionDate>
            { }
            #endregion

            #region Status
            [PXString(1, IsFixed = true)]
            [PXUIField(DisplayName = "Status")]
            [PXDefault("H")]
            [PXStringList(
                new string[]
                {
                    DocStatus.Hold,
                    DocStatus.Balanced
                },
                new string[]
                {
                    "On Hold",
                    "Balanced"
                })]
            public virtual string Status { get; set; }
            public abstract class status :
                PX.Data.BQL.BqlString.Field<status>
            { }
            #endregion

            #region MaterialNo
            [PXString]
            [PXUIField(DisplayName = "Material Number")]
            [PXSelector(typeof(Search<AMBatch.batNbr,
            Where<AMBatch.docType, Equal<materialType>,
                And<Where<AMBatch.status, Equal<Current<status>>,
                    Or<Current<status>, IsNull, And<Where<AMBatch.tranDate, Equal<Current<transactionDate>>, Or<Current<transactionDate>, IsNull>>>>>>>>),
            typeof(AMBatch.batNbr))]

            public virtual string MaterialNo { get; set; }
            public abstract class materialNo :
                PX.Data.BQL.BqlString.Field<materialNo>
            { }
            #endregion

            public const string MaterialType = "M";
            public class materialType : PX.Data.BQL.BqlString.Constant<materialType>
            {
                public materialType() : base(MaterialType) { }
            }

I have created the DAC but it seems when the values are empty all materials are not listed in the selector. Can anyone see what I am doing wrong over here.

Thanks