MigxDB inside MigxDB - get current parent id?

Hi, if I add a migxdb config as a migxdb formtabs field - how can I get the id of the entry I'm currently editing?

Eg I have a classes Brands and Brandcategories.

I've got a config for each brand. And brandcategories config is nested as migxdb tv inside Brand formtabs. I need to get id of the Brand, i'm currently editing, as I add a brand categorie.

Thanks

I've figured out how to get parent id into cmp settings to filter only relevant records. It's object_id. So I can put



in 'where' and it works.

Now I need to get parent's id into "columns" to save it as I add new record. I think, I need co_id, but what is the syntax? If I put something like [[+co_id]] to default value, it doesn't get the right value...

got it