Don't know if you found a solution after so long, but I just wanted to share that a finally solved it after a long time struggling.
I got it almost by mistake, thanks to
this reply from
@Chris D, which is even older than this thread (2014).
Actually I only have one forum with multiple pages, which contains a lot of threads as my community is still under construction, so there's no one posting/replying within threads at the moment. But I assume the same way will work for thread's pages, just by modifying the code accordingly.
I've found that the systems accept
{name}
and
{id}
tags, so for this forum section I've set my filters like this:
So for thread pages I assume it will be...