I am hitting a wall with this one. I'd like to replicate the exiting notify author of inactive pages template but instead of notifying authors of inactive pages, i want to notify owners of pages not updated in a given time.
I already have a rule that finds pages not updated in n months and adds a label, but now I'd like to emulate a similar outcome to the template. Looking at the template I want to modify, how do get this 2nd branch to build the aggregate message per owner as the {{inactivePagesPerAuthor}} smart value is not available in my case?

thanks!