Blender's "User Preferences" changes are not reflected

I would like to add vertices in Edit Mode with Ctrl+right-click.
Overwrite the "Add Vertex" item in User Preferences and
Saved in Save User Setting

However, no matter how many times you try, it will be added with Ctrl+left click.

I thought that Ctrl+right-click already had another shortcut assigned to it, so
I searched everything and deleted it, but nothing changed.

Please let me know if there are any mistakes such as the location of the change.