Lunix Server and Game Modes

I cant seem to set it to spacebuild, by using the the following commads in the server.cfg:

sv_gamemode “spacebuild”

sv_defaultgamemode “spacebuild”

now ive check to see if its spelt right and has the correct uper-lower case, so when i set that it just keeps the server off line, there is no command-line to just set it also.