ToNi,
Apparently, you didn't noticed that I changed the image display for an array of pictures, instead of an array of pict rings. The original pict ring array is still there, but is outside the front panel window. As I said, I just use it as a source for the icon images.
I noticed also the second version I attached in my last post seems to be somewhat corrupted (1 kb ???), although
your vi seems to be a mix of my first and second versions.
Just in case, I attach again the second version, with some comments added on the diagram, since it contains most of the answers to your questions.
Chilly Charly (aka CC)