[ThePhenix]

The problem is that you are not saving the player's password back again to the file, if you are using Y_INI you could:

PHP код:

CMD:changename(playerid, params[])
{
    new id, newname[10], oldname[10], string[128];
    if(isnull(params)) return SendClientMessage(playerid, -1, "Changename [NewName]");
    if(sscanf(params,"s[10]", newname)) return SendClientMessage(playerid, -1 , "/Changename [NewName]");
    if(strlen(params) < 4) return SendClientMessage(playerid,-1,"Name shoulkd not be less than 4 characters.");
    if(strlen(params) > 10) return SendClientMessage(playerid,-1,"Name must be 10 characters max.");
    GetPlayerName(playerid, oldname, sizeof(oldname));
    new file[64];
    format(file, sizeof(file), "/Users/%s.ini", newname);
    if (fexist(file)) return SendClientMessage(playerid, -1, "The name you entered is already being used by another player!");
    fremove(UserPath(id));
    SetPlayerName(id,newname);
    new INI:pfile = INI_Open(file);
    INI_WriteInt(pfile, "Password", PlayerInfo[playerid][pPassword]);
    INI_Close(pfile);
    format(string, sizeof(string), "%s Name changed to (%s).", oldname, newname);
    SendClientMessageToAll( -1,string);
    Kick(id);
    return 1;
} 


NOTE: The PlayerInfo[playerid][pPassword] is an example, you must put the variable where you store the player's password.