Keep Ragdoll on multiplayer!

Hi, I have problem. How to keep ragdoll/corpes on multiplayer? I try singleplayer command (ai_keepragdolls) but is doesn’t work! Help!

BTW. I have rcon password of server.

PS. I see this topic: http://www.facepunch.com/showthread.php?t=720911

But I don’t see the answer.

Nope, I never got an answer on that thread…