Hello,
I am sorry, I searched for supertitle problems, but still can't pass...

I have a supertitle General and 2 topics.

I don't get

General
- Topic 1
- Topic 2

but

General
- Topic 1

General
- Topic 2

do I have to change any variable to get the result which I need?

Thanks.

You probably have included the supertitles on both forums - try to remove one of them and only leave one supertitle.

You need to leave one supertitle in "Topic 1".

Thanks ... I thought I have to put supertitles everywhere and it'll group them ... now it works.

There is an obvious difference between "groups" and "supertitles", but the overall impression is the same. Glad you've noted the difference ;-)