[Stinged]

There is no difference between %i and %d.
This should work.

pawn Код:

CMD:setadmin(playerid, params[])
{
    if (PlayerInfo[playerid][Admin] >= 5)
    {
        new id, level;
        if (sscanf(params,"ui", id, level))
            return SendClientMessage(playerid, -1, "Usage: /setadmin <id/name> <level>");
        if (id == INVALID_PLAYER_ID))
            return SendClientMessage(playerid, -1, "Invalid playerid.");
                if (level < 0 || level > 5)
                    return SendClientMessage(playerid, -1, "Admin levels are between 0 and 5 only.");
            
        new string[66];
        
        GetPlayerName(playerid, string, sizeof (string));
        format(string, sizeof (string), "Your admin level has been changed to %i by %s", level, string);
        SendClientMessage(id, -1, string);
        
        GetPlayerName(id, string, sizeof (string));
        format(string, sizeof (string), "Admin %s has changed your admin level to %i", string, level);
        SendClientMessage(playerid, -1, string);
        
        PlayerInfo[playerid][Admin] = level;
    }
    else
    {
        SendClientMessage(playerid, -1, "You are not allowed to use this command.");
    }
    return 1;
}