@freq63 said:

Here resumed as a picture if easier to understand:

Aargh. Can't edit my post so here my coment; written in green we are supposed to read "but all 4 elements get printed separately without problem" as seen in my video. Without, not with! Sorry for the typo.

Thanks a lot for the precious help. I'll give my best to try to understand the answers and report back if I'm stucked. I didn't know unpack cannot accept 4 values.
What I find confusing is the fact that all 4 values are printed without issue separately before unpack.

Here resumed as a picture if easier to understand:

I hope someone will be able to help. I have an array with 4 elements coming from Arduino. I see each one without issue via [print] method after [fudiparse] (or after [cyclone/fromsymbol] if I use a different method), but I only see the first 2 when I unpack them!
In despite of spending hours trying different methods, I cannot get this to work in 1:44 min video: