Allow 'under' relation for Old field value and New field value in Value Changed trigger.

[flynnblaa]

I'd like to have a rule trigger when a work item's area path changes from any of

a/b/1, a/b/2, a/b/3, a/b/4

to any of

a/c/5, a/c/6, a/c/7, a/c/8

ie. to write a Value Changed trigger like:

FIELD CHANGED
Field name
Area Path

Old field value
Under
a/b

New field value
Under
a/c

--Specifying relations like "under", "contains", "in" is possible in queries. Could it be added to the Value Changed trigger?