How to fill server with bots?

[Bolek]

Hello I'm running dedicated Counter-Strike: Source server.
I would like to fill that server with bots - without humans.
It is possible? When I execute "bot_add", bot is kicked...
I use no server plugins.
Thanks in advance...

[Whistler]

bot_quota 32

[Bolek]

bot_join_after_player 0

must be also set