Help with "World Seeds Mod" on dedicated server

[minsk1]

Hi, I have been trying to generate a new world from a seed to my dedicated server.
I found this mod (link below to the topic) and only advice from that topic was to add worldseed = "seed" to the worldgenoverride.lua
but it doesnt work, it just disappears since it doesnt recognize it?
Below the message from the server-log: 

00:00:05]:   sanity-checking worldgenoverride.lua...    
[00:00:05]:     WARNING! Found override 'worldseed', but this doesn't match any known option. Did you make a typo?

So how can i generate world from a seed in dedicated server.