Irritating problem compiling script for inverse rotor velocities.

Hello and thanks for all the nice guides around, I've read through a ton of them as well as googling - which unfortunately did not really help me solve my issue!

I've dabbled a bit in C++ before and am new to C# so I'm probably mixing up tons of small things when I'm trying to code.

Basically I can't compily my script and I'm at a standstill right now and frankly I cba googling any more than I've already done and would be gratefull if anyone could give me a pointer as to why my rotor is...

Irritating problem compiling script for inverse rotor velocities.