apply code changes NetBeans

I've been trying to do this for several days and I can't. I have to say that when debugging my project, it does stop me at breakpoints, but in the version I had before (7.4) I could modify code and apply the changes. Now, I've changed my computer, and I have version 8.2, and I can't do the latter, neither by putting in the debug option Apply code changes after save (in "Compile on Save" mode only) nor with the little button for it, which is how it used to be. First: Where do I configure "Compile on Save" mode only in 8.2, I can't find it anywhere... Second: Has anyone had this problem, and managed to solve it?

Regards, and thank you very much! Martha