I have tried your suggestion and it worked
SELECT Movements.Account, Abs(Sum(Amount*IIf(DRCR='CR',1,-1))) AS Balance, Movements.Cur, IIf(Sum(Amount*IIf(DRCR='CR',1,-1))>0,'CR','DR') AS FLAG, [Enter Value Date] AS SelectedDate, Rates.Erate, Names.Name, [Erate]*[Balance] AS V_EURO
FROM (Movements...