Sort Ascending (sortAscending)
The Sort Ascending property determines whether the values on a chart are sorted in ascending or descending order.
If Sort Ascending is TRUE, values are sorted in ascending order based on the Sort By property.
If Sort Ascending is FALSE, values are sorted in descending order, reversing the display order specified by the Sort By property.
Type: Boolean.
Default value: TRUE.
You can find the Sort Ascending property in the Chart category of the Properties view.