--reload works for single images, but not for directories

With the use of feh I built a simple Info-Screen with a mini-pc and a samba share from which feh loads images and displays them as a slideshow.

Feh is able to reload a file after an amount of time. But it doesn't reload the content of a folder. I used a script that restarts feh every 10 minutes to make it display files that are uploaded to the samba share while feh is running.