Identify conflicts between families

I try to identify (ID or element) conflicts between families of réservations

In a previous post, I thought I had found a solution to my problem.

https://forum.dynamobim.com/t/an-intersection-node-on-the-same-family-type-in-a-single-list/9241/3

In the meantime I had to change my booking family (adding model lines).
Since my code no longer works.