I tried for that but if in 1st sub-form value updated with default field but if i entered 2nd stock item then its fetch 1st stock item value (Sub-form) How to fetch current stock item value ? please help me on this Code: [#Report:voucher] Variable:Lastsrno Set:Lastsrno:0 [Function:checkqty] Parameter:pCheckQty:Number 20:Return:##pCheckQty [#Field: VCHBATCH BilledQty] Delete:Switch Set as:$$AsQty:($$checkqty:(##lastsrno-1)) Set always : yes Type : Quantity: forced [Variable:lastsrno] Type:Number [System:Variable] lastsrno:0
[Collection: CurrentLineSr] Data Source : Report : Current Client Only : Yes in Set as : $$CollectionField:{your UDF or Variable}:1:CurrentLineSr
[Collection: CurrentLineSr] Data Source : Report : Current Client Only : Yes [#Field: VCHBATCH BilledQty] Delete:Switch Set as:$$CollectionField##Lastsrno-1):1:CurrentLineSr Set always : yes Type : Quantity: forced