Using the Worksheet_Change event on a specific sheet only - excel

Question

So I have a dynamically created worksheet (generated by clicking a command button on a separate sheet) and I am trying to get a Worksheet_Change event to fire only on a specific range in that worksheet. My code is as follows:
Private Sub Worksheet_Change(ByVal Target As Range)
Dim sh As Worksheet
Set sh = ThisWorkbook.ActiveSheet
If Not Intersect(Target, Range("A1:K10")) Is Nothing Then
If sh.Name Like "*SP Temp*" Then
Dim i As Variant, countOfS As Integer
countOfS = 0
For Each i In sh.Range("A1:K10")
If i.Value = "S" Then
countOfS = countOfS + 1
End If
Next i
sh.Range("D12").Value = countOfS
sh.Range("D13").Value = SCount - countOfS
' NOTE: SCount is a global variable set in another Sub
End If
End If
End Sub
The intent is to keep a running count of the number of "S" characters entered into cells in the range A1:K10. I have tried adding in Debug.Print statements after the If Not Intersect... statement, but it doesn't seem to fire, despite the values in the target range being altered. What am I doing wrong?

Answer 1

A Workbook SheetChange: Count and Write
ThisWorkbook Module
Private Sub Workbook_SheetChange(ByVal Sh As Object, ByVal Target As Range)
' Invalidate.
If Not Sh.Name Like "*SP Temp*" Then Exit Sub ' wrong worksheet
Dim rg As Range: Set rg = Sh.Range("A1:K10")
If Intersect(rg, Target) Is Nothing Then Exit Sub ' no intersection
' Count.
Dim CountOfS As Long: CountOfS = Application.CountIf(rg, "s")
' Write
' Disable events to not re-trigger the event while writing
' since the same worksheet is being written to.
Application.EnableEvents = False
Sh.Range("D12").Value = CountOfS
Sh.Range("D13").Value = SCount - CountOfS
Application.EnableEvents = True
End Sub