I am attempting to use the Modification Date system field to advance a "Wait for Event" activity in a workflow. When the workflow begins, I assign the current Modification Date to a GV. The Wait for Event activity is watching for index entry changes and is triggered if the Modification Date system index field is <greater than> the value originally assigned to the earlier referenced GV. I have verified that the Modification Date index field is indeed later than the GV value after clipping another document to the original document, but the Wait for Event activity never advances. I have verified that the date format of both is the same (Date/Time), so I can only surmise that <greater than> cannot be used with date/time fields?