Network.isServer always false

I can't get Network.isServer to work, I tried to use it in a player object as well as other objects, but it always return false even tho im the server. I'm using lan host.

Edit: Problem fixed, I had to use isServer without Network.

 

There is also the NetworkServer.active and NetworkClient.active these actually do work, the Network.isServer should be marked obsolete in my opinion.