I tried outside AM and it works, but inside AM I can't set the command.
This is readme
How to use:
1. Right click PinballArcadeLoader.exe => Properties => Compatibility tab => Make sure "Run this program as administrator" is turned on
2. Run in command line: PinballArcadeLoader.exe PathToYourExe NameOfYourTable (Find the name of your table in PC11\Resource, remove the leading T, and remove the trailing .rez)
Example: PinballArcadeLoader.exe "C:\Pinball Arcade\PinballArcade11.exe" StarTrekTNG
3. If you want the camera to be locked in place add FixCamera=4 or 5 or 6 at the end of the command line. Other numbers are at your own risk.
4. If you want to use custom ball textures, make sure BallAlbedo.png and BallShiny.png are in the same folder as PinballArcadeLoader.exe and add CUSTOMBALL at the end of the command line