A little struggle to understand a console log issue

In fact, that won’t help anyone lol.
It was a fatigue issue.

6000 and 1239 do not exist in collection, so they are undefined. When you try to access the property of something that is undefined, you will get an error.

HAHAHAHA oh man, i am tired. didnt even check if they were existing.

We all brain-fart sometimes. :smiley:

why have you deleted your original question?