You have a template with two items (Item1, Item2) and a trigger that fires whenever Item1 receives data.

In the trigger expression you would only include Item1 to have the trigger fire.

In the trigger description you would like to display both Item1 and Item2 latest values.

At this point you have to include a function that will always evaluate to true for Item2 in the trigger expression to acomplish this and then use {ITEM.VALUE2} etc...

What would be nice is in the trigger description to be able to include a function call like:

"Item2 Value: last(//Item2)" which would mean Item2 would not be needed in the expression and just be in the description.