SetNodeMetaData

Is anyone using SetNodeMetaData to update the metadata associated with an OpenText document? I am creating an integration between OpenText and PeopleSoft Procurement 9.1 and need to update metadata attributes when statuses change on the PeopleSoft side and I can't find any sample code anywhere on this site. If you're updating metadata and not using SetNodeMetaData, I'd be interested in knowing your approach, because I don't have any documentation on the services delivered with the OT integration. Thanks!