Creating Recordset in VBA wit SQL statement

Private Sub Form_Load()

    Dim rst As Recordset

    Set rst = CurrentDb.OpenRecordset("Select [ID], [Ln] From [Order Detail] Where ((([Order Detail].[ID]) = [Forms]![Order Data Entry Header]![ID]))")

    rst.MoveLast
    Forms![Order Data Entry Header].LineNum = rst![Ln]

End Sub

Set rst = CurrentDb.OpenRecordset("Select [ID], [Ln] From [Order Detail] Where ((([Order Detail].[ID]) = " & [Forms]![Order Data Entry Header]![ID] & "))")