# APC40 Mapping individual led. **URL:** \ **Category:** Controller Mappings\ **Tags:** apc40-mapping\ **Created:** [August 21, 2013, 3:05pm UTC](https://forum.djtechtools.com/t/apc40-mapping-individual-led/59900 "2013-08-21T15:05:21Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![jpdretro](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/jpdretro/32/79_2.png) [@jpdretro](https://forum.djtechtools.com/u/jpdretro)\ **Post date:** [August 21, 2013, 3:05pm UTC](https://forum.djtechtools.com/t/apc40-mapping-individual-led/59900/1 "2013-08-21T15:05:21Z")
**APC40 Mapping individual led.** I’ve map my APC40 to go with my S4, my mapping is almost done. The only problem that I have now is that, I’ve put some macro effects and I’m not able to isolate the led. These effects are in the Track Selection section from number 1 to 8. I just want the led to turn green when I push the macro on one number and not having all the other 7 led to light up. The macro effects Fx1: d/w, 3 effects selection, 3 effects amount, 3 button plus Fx2: d/w, 1 effect select, 3 parameters amount, effect on. Time’s 8. Here’s my problem, when I assign the led Out to, let say effect button 1 Fx unit on. All the light opens every time I push the button because there are not assign to the specific button but rather to a state. I’ve try to figure out a way to use the modifier. I still have 4 modifier left. I know that the Track selection is only on/off ( 0 and 1 ) function without the blink. So either I don’t put the right signal for the led or I don’t look at the problem with the right angle… or both! I can say it is the same situation with the loop. I’ve put the loop from /32 to 32 for deck A and B in the Clip Launch. ON= green blinking and off= green. But like I say, when I push on a button off any value all the light from deck A blink, because the led Out is assign to ( Loop Active ) for all the button. For the Loop it is less a problem because it look nice that way. Still, I would be very grateful to anyone out there Who can explain to me How I can assign the led to one specific button and not a general state. Thank’s JP.