I have a spreadsheet that i want to hide columns a:H if the value in cell
L1="N" and unhide if theres a "Y". i'd prefer for the "macro" to be
real-time based on when then N or Y changes.
i got this code off the internet but it doesn't work consistently...i should
have know better than to deviate from this faithful website:-)

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
If Range("L1").Value = "N" Then
Columns("A:H").EntireColumn.Hidden = True
Else
Columns("A:H").EntireColumn.Hidden = False
End If
End Sub

anyone?.....