Example: I created a voucher with Following Details:- PartyLedgerName - ABC Company Sales Ledger - Sales Inventory Details:- StockItemName - Item1 Qty - 50 Nos StockItemName - Item2 Qty - 100 Nos Now, I want to update the Qty Of Item 1 To 150 Nos So, How I can do that?? I think I can do this This by $$LoopIndex Function But I never used $$LoopIndex Function