Get the last element of a list using Bases

Hello,
I am trying to get the last element from a list, using Bases.

I have this code:

```base
formulas:
  date_len: len(date)
views:
  - type: table
    name: Table
    filters:
      and:
        - date_on_or_after(slice(date[0], 2, 12), date_modify(now(), "-4 day"))
        - date_on_or_before(slice(date[0], 2, 12), now())
        - not(contains(property.tags, "entity"))
    order:
      - date
      - formula.date_len
    columnSize:
      file.name: 700
      property.tags: 500
      formula.date_len: 215
    sort:
      - column: formula.date_len
        direction: DESC
      - column: property.date
        direction: DESC

```

And I get the following:

So, I tried using “date_len” to get the last index, but I get blank:

I tried with this code:

```base
formulas:
  date_len: len(date)
  date_last: date[len(date)-1]
views:
  - type: table
    name: Table
    filters:
      and:
        - date_on_or_after(slice(date[0], 2, 12), date_modify(now(), "-4 day"))
        - date_on_or_before(slice(date[0], 2, 12), now())
        - not(contains(property.tags, "entity"))
    order:
      - date
      - formula.date_len
      - formula.date
    columnSize:
      file.name: 700
      property.tags: 500
      formula.date_len: 215
    sort:
      - column: formula.date_len
        direction: DESC
      - column: property.date
        direction: DESC

```

Also, with:

formulas:
  date_len: len(date)
  date_last: date[date_len-1]
formulas:
  date_last: "date[len(date)-1]"
formulas:
  date_last: date[len(date)-1]

As small test, this works:

formulas:
  date_last: date[0]

… and to remove the [[]] and convert to a date, I used slice(date[0], 2, 12). I was not able to convert Wikilinks to a proper datetime object.

Any ideas what I could be doing wrong?
Thanks!

My system information:

SYSTEM INFO:
	Obsidian version: v1.9.0
	Installer version: v1.8.10
	Operating system: Windows 11 Pro 10.0.26100
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		6: Tasks v7.19.1
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		10: Git v2.33.0
		11: Homepage v4.2.1