Change Child Post’s Status

Hello there, and thank you for this superbe plugin!

Everything works fine, except one thing: According to this code snippet

https://broadcast.plainviewplugins.com/snippet/change-post-status-during-broadcast/

I would like to change the child posts’ status to “draft”. But the action hook “threewp_broadcast_broadcasting_started” seems to be ignored. Is this example still up to date?

Thanks for a hint in the right direction!