property OleEvent.CountParam as Long
Retrieves the count of the OLE event's arguments.

TypeDescription
Long A long value that indicates the count of the arguments.
The following sample shows how to enumerate the arguments of an OLE event: 
Private Sub XMLGrid1_UserEditorOleEvent(ByVal Object As Object, ByVal Ev As EXMLGRIDLibCtl.IOleEvent, CloseEditor As Boolean, ByVal Node As EXMLGRIDLibCtl.INode)
    Debug.Print "Event name:" & Ev.Name
    If (Ev.CountParam = 0) Then
       Debug.Print "The event has no arguments."
    Else
       Debug.Print "The event has the following arguments:"
       Dim i As Long
       For i = 0 To Ev.CountParam - 1
          Debug.Print Ev(i).Name; " = " & Ev(i).Value
       Next
    End If
End Sub