Reservation color based on custom attribute (select list)

[oana.vigy]

Hi All,

I would like to set a reservation color based on a custom attribute which it's a select/drop down list named "Type" with 5 values. For each, I would like to attribute a given color.
The problem is that for this field type, it seems I can't go through the different values (as in the attached screenshot). Clicking on "Select" is not available.

Booked v3.5.12.

Do you have any advices?
Thanks for your help.

Oana

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