All FS <-> effect assigments was OK. I wrote in first post - when I click FS, effects turns on. I see it on the background of effect on POD HD display. Just the LED was off. But I found remedy :) I found similar topic in FBV forums, altghough the thing that helped me, didn't help on FBV Shortboard MK2.
I've changed the option "FBV Express" in pod HD settings. I have FBV Express too, and I used it up to now. I forgot about that option before. Everything is OK now, all LEDs are lit when they shoud be.