property CategoryAxis.Reverse as Boolean
Defines the direction of the category axis

TypeDescription
Boolean A boolean expression that indicates the direction of the category axis 
By default, the Reverse property is False. The Reverse property defines the direction of the category axis. The Sort method defines the list of series to be sorted, separated by spaces. The data values in the chart are arranged using the following properties:

The custom order is cleared when Sort or Reverse is set, leaving the Order property empty.

For instance: