how to add "Unread Posts" for vb4

[Inna]

Hi there, I'm using vb 4.2.4 and want to add something which exists in this forum.
In header part of here, it says 'you have 10 posts unread' for example, and I want to add this to my forum.
In vb4 when we click on the link like 'http://forum.om/search.php?do=getnew&contenttype=vBForum_Post', it only show the posts of 24 hours ago or so. But I want something else.
I've seen searh.php file but I couldn't whether it belongs there.
Thanks in advance

[romaine]

Honestly I searched for it in the past but didn't find one way to add unread posts for my vB4 forum and I also am using the link like yours.

[Alan_SP]

Not same, but similar. I may add, much better: https://vborg.vbsupport.ru/showthread.php?t=233310