We have an application that generates event frames. We'd like one attribute to be the minimum value of an AF attribute during a time range ending at the START of the event frame, and starting a configurable number of minutes before the start of the event frame.
The closest I've come to this is the data reference: |Rate;TimeMethod=TimeRangeOverride;RelativeTime=%@GoBack%;TimeRangeMethod=Minimum
However, this is calculating the minimum from 15 minutes before the event frame start (good) to the end of the event frame (bad).
As I said, these event frames are generated by an application, so there is no opportunity to do anything in an event frame analysis.
Any suggestions on what I can do?