Hide Shape based on text entered in another worksheet

[mrbickelsworth]

Not sure if I'm going about this the right way, but I'd like to hide a shape in another worksheet if text is entered in a cell in the first worksheet.
Cell B9 corresponds with one worksheet, B10 with the next worksheet, etc, each with the same named shape in the subsequent worksheet.

As I have it, I'm getting an error that the named object "DoNotUse" is not recognized...

Your help would be appreciated. Thanks!

Private Sub Worksheet_Change(ByVal Target As Range)
Dim i As Long
Dim WS As Worksheet


For i = 9 To 18
    If Range("B" & i).Value <> "" And Range("I" & i).Value > 0 Then
            For Each WS In Worksheets
                If .Range("C3").Value = "SAP Material" Then
                    Shapes("DoNotUse").Visible = False
                        Else
                    Shapes("DoNotUse").Visible = True
                End If
            Next
    End If
Next i
                    
End Sub