Issue:

Detected Problems/Events requires additional information for correct decision making.

Example:

    Event fired: Filesystem / volume has less then 10% Available space
    We need to know total size of volume. Its a big difference when you need to provision additional Gigs or Terabytes of storage.

Current workarounds used now:

• {?Expression macro} in the Event name:
   
  • Event name or Subject of notification grows unexpectedly.
  • Not useful on Event detail page, because it can not reflect current situation of ongoing problem solution.
  • Will stay Unknown forever, if related data was collected only after the trigger fired.

• dummy items in trigger expression:
  

• • Can affect trigger firing, so it's not an option.
  • trigger expression looks unpresentable. Especially for official templates.

Solutions:

• {?Expression macro} support in Operation data.
• Or separate definition of informational items, outside of trigger expression (and macro like {ITEM.LASTVALUE1..9}).