Trying to understand Worksheet_Change event.

[Xaos]

I am trying to figure out why this code won't work.

It seems to do nothing at all.

Private Sub Worksheet_Change(ByVal Target As Range)
    Application.EnableEvents = False
        On Error Resume Next
            Target.Value = "blah"
    Application.EnableEvents = True
End Sub

I just want to understand how to build a code that updates data in a worksheet when any of the current data changes.

For example, If someone puts the letter "x" in say... Cell F4, then Cell E39's value should change to "x"


Any Help Appreciated.