How to "Compile with save" in netbeans after changing the assembly directory?

Question

The Compile with Save feature in NetBeans works well.

But after I changed the project creation directory by adding the line

build.dir=path/to/my/own/build/dir 

or

 build.classes.dir=path_to_my_own_build_dir/classes 

to path_to_my_project/nbproject/private/private.properties , NetBeans no longer compiles when saved.

I have to click the “Compile” or “Clean and Compile” button to compile my project.

I checked that in nbproject/private/private.properties : there is a line compile.on.save=true , and the "Compile on saving" checkbox is compile.on.save=true in the project properties dialog box.

Is there a way to allow NetBeans to "Compile with Saving"?