[ZaBraNjeNi]

#Fixed by myself.

[MBilal]

Can you explain more?
show the cmd.

[DarkLored]

Why are you using #define when you can use variables.

pawn Код:

new L_MG[MAX_PLAYERS] = 0;
new L_DM[MAX_PLAYERS] = 0;

CMD:exitdm(playerid, params[])
{
      if(!isnull(params) return SendClientMessage(playerid, -1, "USAGE: /exitdm.");
      L_DM[playerid] = 0;
      SetPlayerPos(playerid, x ,y , z);
      SendClientMessage(playerid, -1, "You left the deathmatch arena.");
      return 1;
}

Modify my code to your liking.