Reply to Howto LED loop active?

So, tried searching the community s with not much luck. I'm trying to map my launchpad LEDs to go bright when a loop is active (as in JWILLs mapping), but just can't do it! I don't get it, I set the LED up the same way (LED Output for Loop Active, Controller Range 0/1, Midi Range 85/127, no invert, no blend) but all the LED will do is go pfft once I press it, even though the loop is active I have no LED lights.. Why is this? :-\