Coding Language Version

Hello team, hello community.

Just a quick one - how is it with and C# versions used by UiPath? Specifically compiler versions?

The reason I am asking is because I need to use NameOf() operator in Invoke custom code activity. This operator is in C#6 and higher and 14 and higher.
Note that I am using .net framework 4.8, but I believe that is not relevant.

Hope that makes sence.
Thanks, Ed.