How to make probplot run in descending order?

I need to run the function probplot but in descending order, because when the function run it sort the data in ascending order. I tried to do some changes to the function and run it, but I get some errors, because I'm not expert in matlab. Can anyone help me please to run the probplot function so it sort the data in descending order?

Many Thanks in advance

Answer 1

[dpb]

set(gca,'xdir','reverse')  % maybe???