[zxc1]

pawn Код:

stock UserPath(playerid)
{
    new string[128],playername[MAX_PLAYER_NAME];
    GetPlayerName(playerid,playername,sizeof(playername));
    format(string,sizeof(string),PATH,playername);
    return string;
}

The 'PATH' should be changed according to your script.
e.g /Accounts/%s.ini

Plus as far as I understood from ******'s tutorial, it should be:

pawn Код:

INI:filename[n](name[], value[])

EDIT: Another plus, I'm not so sure as I'm not familiar with YSI but I think you have to open the file first.