How to set number options for select field?

[JoSch]

Is it possible to set numbers as options of a select field? In my case, they don’t need to be real integers, which I already found out to not be working, but a number string would be helpful. I’ve tried the following…

type: select
options:
  100:
    en: 100px (@ 1920px screen width)
    de: 100px (@ 1920px Bildschirmbreite)
  200:
    en: 200px (@ 1920px screen width)
    de: 200px (@ 1920px Bildschirmbreite)
  300:
    en: 300px (@ 1920px screen width)
    de: 300px (@ 1920px Bildschirmbreite)

type: select
options:
  "100":
    en: 100px (@ 1920px screen width)
    de: 100px (@ 1920px Bildschirmbreite)
  "200":
    en: 200px (@ 1920px screen width)
    de: 200px (@ 1920px Bildschirmbreite)
  "300":
    en: 300px (@ 1920px screen width)
    de: 300px (@ 1920px Bildschirmbreite)

…both formats throw an error in the panel:

[texnixe]

Select