How to change the legend order on a Viz

How can I change the legend order of the on a Bar Stacked (or the Area) VIZ (currently it’s ordered on an alphabetical way)
It’d be great to allow to change to inverse alphabetical order… at least

(It’s not a colour question)

You can make the column to Factor.

You can start from this column header menu.

Great. It works.

Txs