Editing toolbar Widget -set value to ObjectID

[DavidAshton]

I have the sample editing widget - http://resources.arcgis.com/en/help/silverlight-api/samples/start.htm#ToolkitEditorWidget
up and running.

I'm wondering if someone could help me out trying to figure out a solution I've been working on for a while.

When a new feature is create, I would like to populate a field value (say RelateID) with the value of the OBJECTID (which is being set by ArcGIS).

Has anyone done this or could help me?

Thanks