[L4D] Need help with server
 

i'm trying to configure l4d server, but have a problem

the idea is to setup config for playing versus mode with 1 real player, before someone join game

trying this sb_all_bot_team "1", everything fine when i join game, at the first map safe door opens at first and second rounds, but at the second map safe door always close if i play as survivor

video

any possible solution?

server.cfg