[ylleron]

No but,

anything else do you use, you have to (if you want PVars)
create in every command (zcmd = public) condition about "If is player in DM, is yes send message about type kill to return, if no player can use the command

How to set PVar ?
SetPVarInt(playerid, "IN_DM", 1);

Код:

if (GetPVarInt(playerid, "IN_DM") == 1)
{
SendClientMessage(playerid, -1, "Type kill to use this command");
return false;
}

would be better if you used boolean

when player come to DM set IN_DM as 1

and in /kill set IN_DM (in kill you couldn't set condition!)