Filter_Query on read only fields

I’ve tried the discord support with no answers so I’ll try here:

How do I do a filter query on a property that looks like this?
“articleNumber”: {
“plugin”: “read-only-field”,
“content”: “xxxx”
}
I tried this with no success
“/v2/cdn/stories?filter_query[articleNumber][in]=xxxx”
“/v2/cdn/stories?filter_query[articleNumber.content][in]=xxxx”
“/v2/cdn/stories?filter_query[content.articleNumber.content][in]=xxxx”

or is there another way of achieving similar results? I want to create or update a story based on a property set on it.