How to switch between open and closed eye icon for Show/Hide System Files menu option

[pa-0]

Is there a way to toggle between open and closed eye icons for the Show/Hide System Files menu option e.g.,
between

and

[RubicBG]

yes, it is possible
image = if( condition-like-check-the-registry , image-1 , image-2)
To give a better example, I need to at least know what type of images they are - glyphs, svgs or path-to-files

[pa-0]

paths to svgs saved on disk.