Dear Experts, How to alter rate field in item allocation ( Batch Allocation) , i have trying some code, not working, the code given below.. pls help [#Field: VCHBATCH Rate] Set as: @@ VCHBATCHRNHRate [System : Formula] VCHBATCHMRP:$RateofMRP:StockItem:$StockItemName VCHBATCHINSItemTaxRate :$RateOfVat:StockItem:$StockItemName VCHBATCHRNHRates @VCHBATCHINSItemTaxRate + 100) VCHBATCHRNHRate : ((@VCHBATCHMRP/ @VCHBATCHRNHRates) * 100)