Panel: querying "site.txt" structure fields as pages/subpages fields' values

After fiddling with the link you’ve sent. I understood why you asked about the code… the select (when reading the value from de structure field) already returns the item position in the array/structure. I’m dumb.

Anyway… couldn’t figure how to make the custom field work. i keep getting errors like:

Warning: Illegal offset type in isset or empty in /Users/rhawbert/Sites/centopeia/kirby/toolkit/lib/silo.php on line 30

I’m out of options… and have no idea how to solve this.

[edit] I believe there’s something wrong with the blueprint that’s using the custom select field… I’m using like:

event_type:
    label: Event type
    type: category  
    options: query
      page: events #this is the parent page