I'm creating a very basic species portrait mod for myself and I would really like to customise the pop portraits for different jobs by showing unique portraits in each job type. Is there a simple way to do this without using the clothing asset selector?

I thought I could use the trigger and has_job variable within the portraits file, but it appears to ignore this regardless of what I do. The closest I've seen to what I'd like to implement is the Stellaris Expanded Humans Portraits mod, but that uses the clothing asset selector and that really complicates things based on what I'm trying to achieve (static portraits with no clothing options).

Any help would be welcome.