Recover Deleted Pictures on MyCloud/Android

I had over 400 pictures deleted off my Android phone(S4) that is synced with my MyCloud. Is there anyway to get them back using the MyCloud?

If the files exist on the My Cloud, then install a file manager app like ES File Explorer on the Android device, and copy them back. ES File Explorer will allow you to access the My Cloud across your WiFi local network (provided the My Cloud is on the same local network).

After the delete it synced with the MyCloud so it deleted them off the back up. Is there anyway to recover from the MyCloud? I made an assumption since this is a back up that it there would be a way built in to do this, but maybe not?