How to set `tab-bar-select-tab-modifiers`?

Question

According to the docs of tab-bar-select-tab-modifiers :

List of modifier keys for selecting tab-bar tabs by their numbers.

Possible modifier keys are control, meta, shift, hyper, super and alt. Pressing one of the modifiers in the list and a digit selects the tab whose number equals the digit (see tab-bar-select-tab).
The digit 9 selects the last (rightmost) tab (see tab-last). The digit 0 selects the most recently visited tab (see tab-recent).

For easier selection of tabs by their numbers, consider customizing tab-bar-tab-hints, which will show tab numbers alongside the tab name.

so I set it something like this in my configuration file :

(setq tab-bar-select-tab-modifiers "super")

but it doesn't do anything ( pressing s-1 says it's not bound to anything ), am I setting it correctly or is there something I am missing here ?

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Emacs version: GNU Emacs 29.0.50

OS : MacOS

Answer 1

M-x customize-variable RET tab-bar-select-tab-modifiers

Put a click mark and click Apply and Save. That gives me

(custom-set-variables
  '(tab-bar-select-tab-modifiers '(super)))