Storing a list as a variable to avoid recreating it everytime?

Dear community,

I would like to create a list, and then be able to use it in different puzzle blocks. Sadly, I can’t make it work.
I tried to create a variable and set it to be my list, and then use the variable to detect a click on one of the elements, but it didn’t work. I join a picture of what works (upper part) vs what I tried without success (lower part).

I really hope this is achievable, because otherwise, I would need to recreate a list everytime I want to use it, which makes it impractical if I want to update regularly my list.

Thanks for your help!