Error while trying to modify

Hi,

Just had the following error while trying to modify an engine:

Step() failed!:[string"…"]:105:attempt to index field ‘VVT’ (a nil value)

Also added the engine file.

Have fun with it!

Love the game so far!
Best regards;
Thomas Doolaard

When I finally opened the file, I noticed that VVT and VVL were blank.
Aspiration, Fuel system and Exhaust were o.k. and the engine has run.