/makeadmin [playerid] [adminlevel]

Staff[playerid] = 1;

// This is a macro function call it will specify the allowed command level of a command
#define CMDLEVEL(%0) if(PlayerData[playerid][p_Level] < %0) return SendClientMessage(playerid, -1, "You are not high enough level to use this command)

// enum of the PlayerData variable
enum PLAYERINFO
{
    p_Level,
    p_Password[129],
    p_Kills,
    p_Deaths,
}

// We store the player data in here
new PlayerData[MAX_PLAYERS][PLAYERINFO];

// Make admin example
CMD:makeadmin(playerid, arg[])
{
    // Command level must be 3 or greater
    CMDLEVEL(3);

    new pid, level;
    if(sscanf(arg, "ui", pid, level)) return SendClientMessage(playerid, -1, "Usage /makeadmin <id> <level>");
    if(pid == INVALID_PLAYER_ID) return SendClientMessage(playerid, -1, "That player is not connected");
    if(pid == playerid) return SendClientMessage(playerid, -1, "You can not use this command on yourself");
    if(level < 1) return SendClientMessage(playerid, -1, "Level must be greater than zero");
    if(level > PlayerData[playerid][p_Level]) return SendClientMessage(playerid, -1, "You can't set some a higher level than yourself");
    if(PlayerData[pid][p_Level] >= PlayerData[playerid][p_Level]) return SendClientMessage(playerid, -1, "This player is higher or the same level already");

    PlayerData[pid][p_Level] = level;

    new line[128];
    format(line, sizeof(line), "%s has set your level to %i", ReturnName(playerid), level);
    SendClientMessage(pid, -1, line);
    format(line, sizeof(line), "You have set %s to level %i", ReturnName(pid), level);
    SendClientMessage(playerid, -1 line);

    return 1;
}

// Return name stock
stock ReturnName(playerid)
{
    new Pname[MAX_PLAYER_NAME];
    GetPlayerName(playerid, Pname, sizeof(Pname));
    return Pname;
}