I am setting Issue Properties through Jira Automation and want to query these properties through JQL. What is the correct syntax for that?
I've tried
issue.property[testprop] is not empty
issue.property[testprop].value is not empty
and it's not working.

I have a few ideas of why that is:
- This question from 2018 suggests that properties added through Automation are not indexed. Maybe that's still the case?
- I am not setting the property correctly and it needs a different format
Note/context: I am trying out properties as alternative to saving values into hidden fields. I need to memorize the number of reminders sent out to a user and used a field for that purpose. That has stopped working and the field now needs to be added to the screen, unless you use the A4J user as actor.