Fuel Pressure Tutorial

Has anyone been to get the fuel pressure gauge tutorial to work?

I get 000000016 and never changes. Throttle or turning the engine off does not effect it.

The documentation says that engine stuff starts with an index of 0 (Simulation Variable under notes page 1 or 2). Yet, the tutorial uses 1. I tried 0, just got zeros.

Also, the preview function in the ACE does not work.

Any suggestions?