[Dark_Kostas]

pawn Код:

public OnPlayerText(playerid, text[])
{
    if(IsPlayerInRangeOfPoint(playerid, 10.0, YOUR_X, YOUR_Y, YOUR_Z))
    {
        new string[128];
        format(string, sizeof(string), "%s Says: %s", sendername, text);
        SendClientMessage(playerid, 0xFFFFFFFF, string);
        return 0;
    }
    return 1;
}

Replace the YOUR_X, YOUR_Y, YOUR_Z with the co-ords you want.
This will send you a message what you said, but ONLY to you.