How do I run a script when I switch between keyboard layouts

I use more than one keyboard layout, and I would like to find a way to run a script when I switch between them. Is this possible? So far, I can assign a shortcut for a script like this: #!/bin/bash #switch between two layouts (English and Greek in this case) current_layouts=$(gsettings get org.gnome.libgnomekbd.keyboard layouts) if [ "$current_layouts" = "us" ]; then gsettings set org.gnome.libgnomekbd.keyboard layouts "['gr']" else gsettings set org.gnome.libgnomekbd.keyboard layouts "['us']" fi exec /path/to/another/script But using this method, I can use only that shortcut to switch between layouts and the keyboard indicator will disappear from the status menu, what is unpleasantly.