Hi Stephen,
Those settings should be all that is required. I would ask a couple questions:
1) Are there 3Par datasources in your account? Settings->Datasources, do a search for 3Par (you should see ~10 datasources). If not, download them from the LogicMonitor Core Repository.
2) Have you tried an ssh connection to the 3par from the Collector? That's how the datasource would work, so the ability to establish that ssh session *from the collector* is mandatory.
3) If you still can't get it working, I highly recommend using Support-> Chat with Engineer. They should be able to help you get this working quickly.
Hope this helps!
Chris