Colourfull closing balance with dr,cr simbol

Dear Sir ,
I am adding Old balance and current bill in invoice and code are given below but in that
1 ) old balance amount is coming but colour in dr amount red and in cr amount green is not changing even though i insert condition .
2) In BillAmt1 field g. total amount is not coming, I tried $$amount but that is net amount is coming and not the g. total . Even #EXRPNVINVTotal showing blank space.
Pl help in this problem
Regards.

[Field : Name Field1]
Use : ShortPrompt
Set As : "OLD BALANCE"
PrePrinted : Yes
Width : 25% Page
Style : Normal
Print FG : Blue
Colour : Blue

[Field : Name]
Use : Amount Forex Field
set as : $ClosingBalance:Ledger:$PartyLedgerName - $Amount
Preprinted : Yes
Width : 15% Page
Style : NormalBold
Print FG : Red
Colour : IF $ClosingBalance Dr then Red else Green
Format : "Symbol,DrCr"

[Line: Billamt]

Fields:Billamt1
Spce Top : 0.50

[Field: Billamt1]
Field : Short Prompt, Amount Field
Local : Field : Short Prompt : Info :$$LocaleString:"BILL AMOUNT"
Local : Field : Short Prompt : Width : 21.5
Local : Field : Amount Field : Set as : #EXRPNVINVTotal
Local : Field : Amount Field : Format : "Symbol,DrCr"

 

Dear,
No one is there to response, PLEASE

 

please check this area of your code


Colour : IF $ClosingBalance Dr then Red else Green

Local : Field : Amount Field : Set as : #EXRPNVINVTotal

 

sir,
I know the area of mistake, but what is needed is correct code or where and what the mistake ? Normally when u put '#EXRPNVINVTotal' replies the total amount of the Invoice, but here blank replies.