Unable to modify $PATH in Jetson

Got a Jetson AGX and the path is set to
/usr/local/cuda-10.2/bin:/sbin:/bin:/usr/bin:/usr/local/bin:/snap/bin
I manually installed DotNet and I’ve tried to change /etc/enviroment to the SDK folder
PATH=“/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/home/jetson/dotnet”
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?