为什么这个Excel（Mac 2011）目标没有寻求宏观工作？

Private Sub Worksheet_Change()
    CheckGoalSeek
End Sub

Private Sub CheckGoalSeek()
    With Worksheets("Inverse")
        .Range("E19").GoalSeek _
        Goal:=0, _
        ChangingCell:=.Range("B19")
    End With
Private Sub Worksheet_Change()
    CheckGoalSee