This indicator its called "Time per Bar" .... you will need to first copy the getmachinetime dll into tradestation program folder... so you can have seconds taken into acct on the calculation.... on historical data he will only take minutes into acct, the real time data will be on seconds...
when you get long histograms means it took more time to build the bar (weakness), true is oposite, hope this can help.... cheers Walter.