i want formula to calculate grand (total / qty) of sales invoice

grand total is final amount including taxes
quantity of bill

code is >>>>

[System: Formula]

JPAMT: $$FilterAmtTotal:LedgerEntries:sGSTSKR:$Amount
SGSTSKR :$Name:Ledger:$LedgerName Contains $$LocaleString:"Sales"

qtyGST:$$CollAmtTotal:inventoryentries:$Billedqty;$$vchbilledqty;$billedqty

avggAMOUNT: @@JPAMT / @@qtyGST

 

change $$CollAmtTotal as $$CollQtyTotal

 

[System: Formula]

JPAMT: $$FilterAmtTotal:LedgerEntries:sGSTSKR:$Amount
SGSTSKR :$Name:Ledger:$LedgerName Contains $$LocaleString:"Sales"

qtyGST:$$CollQtyTotal:inventoryentries:$Billedqty;$$vchbilledqty;$billedqty

avggAMOUNT: @@JPAMT / @@qtyGST



not working

 

try as qtygst:$$totalyourfieldname)...and add in ur repeat line as totalyourfieldname)