City Name in Forms Receivables report in 5.3.8

Updated to Tally new version 5.3.8. Customised tdl to include "City Name" after the party name in the Forms receivables report (i.e) C Form pending report in the tally 4.9 worked well not working in Tally 5.3.8, where is mistake and how to correct to it please help sir,
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;;========= Print Group Name & City Name in C Form Receivable List ==================

[#Form : CST rb GrpFormsReceivable]
Local : Field : DSP ReportSubTitle : Set as : ##GroupName

[#Line : CST VouchersDetails]
Add : Field : fldCstCity

[Field : fldCstCity]
Use : Name Field
Set as : $udfCity:Ledger:#DSPVchLedAccount

;;============== City Name in Party Name Selection Table ===========================
[#Collection : CST RecbleVoucherColl]
Source Collection : CST RecbleInvVoucherColl, CST RecbleActVoucherColl
By : LedgerName : $LedgerName
Compute : Name : $LedgerName
Compute : City : $UDFCity:Ledger:$LedgerName

[#Collection : CST PartyLedgersList]
Title : $$LocaleString:"List of Ledgers"
Align : Right
FullHeight : Yes
Fetch : Name,$UDFCity
Collection : CST RecbleVoucherColl
Format : $Name, 25
Format : $UDFCity,20
Trigger : CST Party Ledger
Variable : LedgerName
Report : CSTFormsReceivable

[#Line : CST PendingFormsTitle]
Add : Field : fldCityCst

[Field : fldCityCst]
Set as : $udfcity:Ledger:##LedgerName
Style : Normal Bold

;[#Part : LR Party]
;Add : Line : LR City
;
; [Line : LR City]
; Field : LR City
; Indent : 5
;
; [Field : LR City]
; Use : Name Field
; Set as : If $$IsEmptyDefVal Then @CSTPartyName Else @DefVal
; DefVal : $udfCity:Ledger:#LedgerName
; CSTPartyName : $udfCity:Ledger:$Name

;[#Report : CSTFormsReceivable]
;Print Set : ReportTitle : ##LedgerName + "," + $udfCity:Ledger:##LedgerName

;[#Form : CST GrpFormsReceivable]
;Local : Field : DSP ReportSubTitle : Set as : $Name + "," + $udfCity:Ledger:$partyledgername

;[#Line : CST PartyLedgerName]
;Local : Field : Form SubTitle : Set As : $PartyLedgerName + "," + $udfCity:Ledger:$PartyLedgerName

 

[#Line : CST VouchersDetails]
Add : Field : fldCstCity

This line worked in Tally ver 4.9 and not working in ver5.3.8. Need Help to know the ways to identify the line in tally or please help me in correcting this line name