in vursus mode

player vs player

if you want to be infected in single player open left 4 dead play single player and
sv_cheats 1 after that you type director_no you will see the director_no_human_zombies 1
turn 1 into 0 and play it and let the zombies kill you and your team mate after that when
all of you were alive again press m and choose special infected and if you want smoker
type z_spawn smoker if tank z_spawn tank and other special infected

this is the cheats
sv_cheats 1
director_no_human_zombies 0
press m and choose the infected and type z_spawn smoker when you are the infected or
z_spawn hunter,z_spawn tank,z_spawn boomer
note:other cheats is exec custom but it doesn`t work

how do you type in director

as soon as i become infected it restarts or something. why and how can i stop it

(All in the console)
1.sv_cheats 1
2.sb_all_bots_team 1
3.director_no_humans_zombies 0
(Make sure your develepor console is enabled and No.2, I don't remember it much so pick
the one most nearest to it)