Where is the "data-shortdays_indexes" box?

In the FAQ "Date control using CFv5 date picker element" this is mentioned:

And to change the days order you can change the short days indexes:

data-shortdays_indexes=[0, 1, 2, 3, 4, 5, 6]

For example, to have Monday as the first day use:
data-shortdays_indexes=[1, 2, 3, 4, 5, 6, 0]

But in the 'Advanced' tab I can't find the 'data-shortdays_indexes' anywhere?

Hi GeertMartens,

It's called Short Days

Bob

Hi Bob

In the box 'Short days' you can "translate" the days, e.g. ["Zo", "Ma", "Di", "Wo", "Do", "Vr", "Za"]
I can't find on how to change the days order in there (what I want is Monday to be the first day of the week (and not Sunday)).

Thanks Bob!