Unable to modify $PATH in Jetson

Got a Jetson AGX and the path is set to
I manually installed DotNet and I’ve tried to change /etc/enviroment to the SDK folder
But it doesn’t work (doesn’t work = dotnet is still not in the path when I run echo $PATH via GNome terminal).
I also tried to add PATH=“$HOME/jetson/dotnet:$PATH” to ~/.profile but it didn’t work either.

Any idea?