Can someone please tell me why this event is not firing, i already checked and the application event is true. Is there something wrong with the code below that i am overlooking, i am still learning VBA so i may have missed an error.

Private Sub Workbook_SheetChange(ByVal Sh As Object, ByVal Target As Range)
If Cells(ActiveCell.Row, "B").Value = "Christopher Hall" Then
Cells(ActiveCell.Row, "C").Value = "Integrating"
End If