[Schneider]

..then you've probably used a different script than you've provided here:

pawn Код:

public OnPlayerDeath(playerid, killerid, reason)
{
  if(GetPlayerWeapon(killerid) == 38)    // you check if the killer has a minigun, that's good. 
  {
        if(IsPlayerAdmin(playerid))    // now you check if the player who got killed is rcon admin. 
        {
          new hackername[MAX_PLAYER_NAME], str[128];     //
          GetPlayerName(playerid, hackername, sizeof(hackername));    // you get the name of the person who GOT killed  (not the killer). 
          format(str, sizeof(str), "{FF0000}ATTENTION: %s has been automaticlly reported by the server for using hacks[REASON: Minigun]", killerid);  // The player who died is called a 'hacker'. 
          SendClientMessage(playerid, -1, str);  // only if the player is rcon-admin he will get the (Wrong)message. 
        }
  }
  return 1;
}

..also: You've included zcmd which is not used at all, this will give errors to people who do not have that include.

Maybe you should keep scripting and learning a little bit more on your own before you release stuff that does not work properly.