Problem with a list in CAS-program

[Arno K]

(10-11-2017 01:46 PM)DrD Wrote:  

(10-11-2017 11:58 AM)Didier Lachieze
Try with l[K' Wrote:  :=l[K]+1

It works with matrix brackets instead of list brackets, but it still seems like a bug, because, even using square brackets, the command entry shows up in history the same way Arno posed the original question.

Thank you, as I had to break down to eliminate several possibilities I simply forgot to try that.
This surely works but I think it should work with l(k) at least as well as with square brackets as round parenthesis are ususally used for these purposes.
Arno