Hello sir,
I'm using code:Private Sub Worksheet_Change(ByVal Target As Range)
If Not Intersect(Target, Range("R2:R21")) Is Nothing Then
Cells(Target.Row, "S") = BS2AD(Cells(Target.Row, "R"))
Exit Sub
ElseIf Not Intersect(Target, Range("S2:S21")) Is Nothing Then
Cells(Target.Row, "R") =...