Adaptavist Script to populate a Multiple Custom Picker field with options from another field?

[Deleted user]

I have a "Select List (multiple choices)" field in my instance to store names. This field has about two hundred options that are manually updated. I'd like to make another field that allows the user to select multiple options from the same name list.

While I can copy out the name list, I'm not finding any way to import that list into a new field. Even if I could, this will require maintaining two field lists. (Not optimal, but acceptable if there's no alternative.)

Is there a way to point a new Adaptavist Multiple Custom Picker field at the option list for the original field, to read dynamically as needed? I believe the options are stored in the customfieldoption table.