Setinfo detection

Hello.

I have a little problem and i hope you guys help me. I think is very easy.
First off all , i posted this on alliedmods and 5 more forums with active coders and everybody ignored me , hope this doesn`t happen here.
I must say that i own A STEAM SERVER , proof is that this plugin will NOT work on non-steam clients , so .....its no use if you don`t have a steam-only server.
This plugin sets "setinfo _ban 13123" or any value .....when the player gets back on the server it checks the setinfo and if is any number from 1- infinite it kick him.
The "ban" can not be removed without telling the player "the secret".
What i want is this :

public unban
{
execclient "setinfo _ban ok"
//a function that changes the players _ban value to "ok"
}

public verification
{
if "setinfo _ban" = OK leave him alone

ELSE DO THIS :
static szBanTime[11], iBanTime;
get_user_info( id , gBanKey , szBanTime , 10 );

iBanTime = str_to_num( szBanTime );

if( ( iBanTime == 1 ) || ( get_systime() < iBanTime ) )
server_cmd( "kick #%d ^"Banned!^"" , get_user_userid( id ) );
}
}

Well . i'm sure there aren't many coders on XJ. Allied modders will help you more then XJ. If they ignored you just ... try harder xD. Exolent helped me with about 10 plugins ,heh.

http://www.amxmodx.org/funcwiki.php?search=user_info&go=search

tbh, i dont like to answer question which are very easy to answer (like this one). also i dont have the time to answer everybody here.

check in client_connect() whetehr the info and kickh im if the player has a special info and create some clcmd to change the info, i wont create such a plugin or write a entire function for you.