I'd like to create some Jira rules based on the status of a "Linked Major Issue", however, I am having trouble getting Jira (JQL) to actually look at that field. I've found some documentation that indicates these queries should work, but when I use them in JIRA I get errors.
"Linked major incidents" is not EMPTY

Does anyone have any suggestions? Perhaps this isn't a field I can access in that way?
I've considered doing this through the Linked Issues Trigger, but wanted to see if the more direct route would work first.