[DRIFT_HUNTER]

pawn Код:

CMD:setrank(playerid, params[])
{
    new id, rank[24];
    if(sscanf(params, "us[24]", id, rank)) return SendClientMessage(playerid, COLOR_WHITE, ""#COL_DGREY"[CMD] / "#COL_SGREY"[PlayerID/PartOfName] [Rank]");
    else if(id == INVALID_PLAYER_ID) return SendClientMessage(playerid, COLOR_WHITE, ""#COL_ORANGE"[ERROR]"#COL_LRED" Player not connected!");

    format(PlayerInfo[id][Rank], 24, "%s", rank);
    return 1;
}

make sure you have in player enum defined rank like Rank[24] cos rank is string