Calculated Item in ActionMail

[Zabbbix]

Hi folks,

i have an email which shows the diskspace from today and the diskspace from yesterday.
now i'm searching a way to show (calculate) the difference (delta) between those items in the email.
Hope there is a way to realize this.

Example:
Diskspace Today: / - 60GB Used/ 40 GB Free/ 100 GB Total
Diskspace Yesterday: / - 40 GB Used / 60 GB Free / 100 GB Total
Difference: / - 20 GB (Maybe with a leading sign +/-)

Kind regards

[BDiE8VNy]

Calculation with macros is not supported in message bodies.
But you might use Calculated items and reference these instead.