Catch Base I Featured Slider – switching languages

Hi, I've built a website in two languages and now that is nearly done I realized there is one thing that doesn't work. http://victorpanicello.com/ (It isn't live yet.) In my featured slider images there is some text (some images are graphs with text). That's why I've uploaded different images (featured image in each page) for each language. When I'm on the main page and change language this images in the slider doesn't change. The strange thing is that when I preview the web while customizing the featured slider it does work (so the image change when switching languages). Can you please advice? Thank you very much!!