property Graph.Sort as String
Defines the list of series to be sorted, separated by spaces

TypeDescription
String A string expression that defines the list of series to be sorted, separated by spaces. Each series can be extended with a ":D" suffix, indicating a descending sorting order for the series.
The Sort property sorts the values of the chart. The Reverse property defines the direction of the category axis. 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:

The following screen shot shows the chart using unsorted data (Sort property is ""):

The following screen shot shows the chart using unsorted data (Sort property is "0"):

The following screen shot shows the chart using unsorted data (Sort property is "0:D"):