Creating Statistical Histograms - Formatting Charts

Hi -

I'm trying to create a histrogram of time since the last successful backup. See attached for my XML which you can import into your DPA GUI.

My problem is that DPA charts don't have an order button.  The X-axis defaults to time and the time goes from old to new (left to right).  But I want the reverse for a historgram that I am trying to create.  Any ideas?  Below is an example of what I want to get to.  i also think this type of report should be standard with the next DPA release.