All macros by documentation and testing are limited to single digit values.
As such, getting an email action to report the status of all 12 inks in an HP Designjet for example is impossible, because item.name and item.value 10 and up simply do not work.

This is a serious limitation for which the only work around I can see is having 12 triggers instead of one which is not as elegant and removes the ability to present an overview of the whole device in the alert instead of just a single alert item.