[AccessD] Closing & Destroying Objects

Hello Group,
 I have a question about how to close an object correctly..

Dim rstWOS              As DAO.Recordset

Set rstWOS = db.OpenRecordset("qryServicesNavigator", dbOpenDynaset,
dbInconsistent)

 I do a findfirst on rstWOS which I pass to another form. Like such..


            DoCmd.OpenForm "frmMsgboxWODelete", , , , , acHidden
            With Form_frmMsgboxWODelete
             .CallingForm = "Calander"
             .RN = EventRN
              Set .rst = rstWOS
              .Visible = True
            End With

In the form it's a property 

Private m_objRst            As DAO.Recordset

Public Property Set rst(objRst As DAO.Recordset)
    Set m_objRst = objRst
End Property


Where do I Properly close and destroy the recordset, in the first or the
second or both?

I'm thinking that I need to destroy it on the first, as if I destroy it on
second via:

Private Sub Form_Unload(Cancel As Integer)
If Not m_objRst Is Nothing Then
 m_objRst.Close
 Set m_objRst = Nothing
End If
End Sub

Then I get some very strange problems trying to destroy in on the first..
Like and Error 3420 Oject Invalid or No Longer Set Via: (because the
recordset is already closed??)


If Not rstWOS Is Nothing Then
 rstWOS.Close
 Set rstWOS = Nothing
End If

TIA...

WBR
Robert