ActiveCell.Formula = "=SUMIFS(OrderBook!$K$2:$K$" & lngOrderBookLastRow & _
",OrderBook!$B$2:$B$" & lngOrderBookLastRow & ",Master!$A3,OrderBook!$N$2:$N$" & lngOrderBookLastRow _
& ","">0"",OrderBook!$N$2:$N$" & lngOrderBookLastRow & ",""<=""&$B3)"