[Penny_Dreadful]

Hello, I'm looking for some help creating a composite column combined with an advanced icon rule, to give me a column that has icons for the online libraries I can borrow that book from. I currently have columns for each of theses online libraries but I'm hoping to combine the columns into one.

The Calibre Library is my Wish-list/To Read Library so its full of empty books with full metadata. The ID field might have ids for "borrowbox", "wheelers" and "odid" which is a combined ID that might have Overdrive ID and/or a Kindle Unlimited ID. It might also not have any of those IDs in which case I'd like nothing to show in that column.

The IDs look like this:
borrowbox:AAU_779614 Three uppercase letters then an underscore then six numbers ^[A-Z]{3}_\d{6}$ is the regex I am using for the single column
wheelers:9781760873752 Yes this is the ISBN 13 of the book ^(?=(?:\D*\d){10}(?:(?:\D*\d){3})?$)[\d-]+$ ISBN regex.

and the odid can look like one of these:
odid:5426939@wapldmc.overdrive.com
odid:B088PB8T42@ak/unlimited
odid:2077018@wapldmc.overdrive.com&B00PY6CSNM@ak/unlimited

and my icons are named kunlimited.png, wheelers.png, borrowbox.png and overdrive.png

Thanks for any help!

I've created the column listing the IDs by using the template:
program:
strcat(select(field('identifiers'),'odid'),' ', select(field('identifiers'),'borrowbox'),' ', select(field('identifiers'),'wheelers'));

but getting the icons to work using an advanced rule is just confusing me.