[MarkNelson]

Hi, today i got this error and i can't fix it, i tried 9-5 times and i can't the same probleme happen.
here is codes:

Код:

error 021: symbol already defined: "cmd_leave"

Код:

CMD:leave(playerid,params[])
{
if(InDerby[playerid] == 0) return SendClientMessage(playerid,COLOR_GREEN,"You are not in derby!");
  {
   InDerby[playerid] = 0;
   SetPlayerHealth(playerid,0);
   }
   return 1;
}

the line of the error is in the first "{"
under CMD:leave