Icon Istage led

Hi

My controller is an Istage by icon audio. It features an 8x4 matrix to control ableton session.

Here is the color code for the leds

Red: note on, velocity 127
Red blinking: note on, velocity 126
Blue: note off, velocity 127

With remotify, I could easely create the session box. I had no problem to get the red blinking Thanks to the led feedback section, in the remotify app.
The problem is with the red and the blue. As I launch ableton, the pads immediatly get red. And there is no way to turn them blue.

I think it's due to the fact that a note off should be sent from ableton to the controller to turn the pad blue.
It use to work with a former script I've generated with modern dj apps. All the Colors were ok. But the script is now out of date with Live 9

Is there a way to solve my problem?

Thanks!
Melo