EPMSelectMember OnChange Refresh report

Hi experts,

I want to use EPMSelectMember in a cell but according to this cells' selection I am overriding members in row, so I need to refresh active report, or workbook.

I had written a simple macro getting any change in value of cell containing EPMSelectMember formula but strangely even though I select different members my macro does not work. Do you have any idea?

Dim client As New EPMAddInAutomation

Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Column = 6 And Target.Row = 21 Then
client.Refresh
End If
End Sub

Thanks in advance,

Ergin Ozturk