Hi Ben,
If $experiment_id variable is used, the function will not return the latest possible session time, instead it will return the 'registration end' time of the session that was created first. Indeed MAX function in mysql query will return a column named 'time' with the time of the latest session, but other columns will be related to the first listed session. You have to use MAX in subquery...
2009-06-02 11:19:55 UTC in ORSEE
