[Revo]

pawn Код:

//Top of script
new LastReply[MAX_PLAYERS];

//PM command
CMD:PM(playerid, params[])
{
  new id, message[120];
  if(sscanf(params, "is[120]", id, message)) return SendClientMessage(playerid, -1, "Usage: /pm ID message");
  SendClientMessage(id, -1, message);
  SendClientMessage(playerid, -1, "message sent");
  LastReply[id] = playerid;
  return 1;
}

CMD:r(playerid, params[])
{
  SendClientMessage(LastReply[playerid], -1, params);
  SendClientMessage(playerid, -1, "message sent");
  return 1;
}

You basically need that, I am unsure if it has bugs as I haven;'t tested it, but you should get the idea.