In J4 it is possible to put child-tags under a parent-tag. How do I include child-tags when filtering on a parent tag?

I tried:

{{article tags="Regisseurs" include-child-tags="true"}}
{{foreach data="tags"}}
[[row:image-intro]]
[[row:title]]
{{/foreach}}
{{/article}}

and:

{{article tags="Regisseurs" include-child-categories="true"}}
{{foreach data="tags"}}
[[row:image-intro]]
[[row:title]]
{{/foreach}}
{{/article}}

I would very much like to have ArticlesAnywhere to support include-child-tags.
Just saying. In the meantime I will be patient.


I want to achieve something similar to this:

In words: an article has 3 unknown child-tags, each a child of 3 known parent-tags [artforms, years, directors] and I want to show other-articles that have the 3 child-tags

tag: artforms -> child-tag X -> all other articles with child-tag X
tag: years -> child-tag: 9999 -> all other articles with child-tag 9999
tag: directors -> child-tag: ABCDE -> all other great works from ABCDE

tag: artforms -> child-tag comedy -> all other articles with child-tag comedy
tag: years -> child-tag: 2018 -> all other articles with child-tag 2021
tag: directors -> child-tag: tarantino -> all other great works from tarantino

Can I use include-child-tags in a foreach structure like below?

Each article has only 1 [unkown] child-tag of the [known] parent-tag:id="33", this is the one I want to select. How do I do that?

I want to show the image of the unkown child-tag: