userlist filter on online status

Hello,
I wonder if there is a way to give the user the choice to select online users or not
I have seen this old post

there is some code proposed :

ONLINE ONLY:
[code:1]
( ( SELECT MAX( s.time ) FROM #__session AS s WHERE s.userid = u.id AND s.guest = 0 ) IS NOT NULL )
[/code:1]

OFFLINE ONLY:
[code:1]
( ( SELECT MAX( s.time ) FROM #__session AS s WHERE s.userid = u.id AND s.guest = 0 ) IS NULL )
[/code:1]

So my question do you think that this always could work on cb 2.0.9

What I'm missing in this code is : where is the user choice to show online or offline users ?

That'll probably still work fine. You have to create 2 userlists. 1 showing online and 1 showing offline and then they can choose from the lists.

Customer does not accept 2 lists - so there is really no way to do this kind of thing in one list ?

I suppose you could create a field and try using a substitution IF statement to determine if online or offline should be showing. Aside from that, no there's no other solution.