私のコードのエラーの原因を理解するのを手伝ってください:
Private Sub Workbook_SheetCalculate(ByVal Sh As Object)
Dim MyRange as double
Dim ErrorCheck as Boolean
Set MyRange = Sheets(1)
ErrorCheck = WorksheetFunction.IsError(MyRange)
If ErrorCheck = True Then MsgBox "ERROR on the Sheet"
End Sub