In the readme, it says:
[quote]
The first option represents the height level with 0 being lowest and 1 being normal
Which makes it sound like it accepts a fractional value between 0 and 1, but in reality, the only acceptable options are 0 (disabled), 1 (medium) or 2 (high).
I don't quite understand why the second parameter needs to be a string and not a native boolean:
MP Example: [param1, "true"] execvm "Grass_Changer\grass_changer.sqf";
rather than what I'd expect:
MP Example: [param1, true] execvm "Grass_Changer\grass_changer.sqf";
Otherwise, a nice little script and good because it explains how to use it as one of the mission params in MP missions.