@massi
ok cleaned topic.
i’ve understood that who=0 is the button that control all my rollershutters. found by your binding and now is working in OH3. never knew that physical button was configurable in OH 
sorry i didn’t understand you accepted to reimplement the support for my github request. i supposed that was based on number of users that request that support…in this case, i really appreciate, it’s enough to know you accepted to readd this support, no mater of when
ps. yesterday i’ve found a physical error on my scenarios physical buttons, a configurator was missing making button 1 and 3 blinking fast when electrical power on home goes down and up. i’ve readded the missing configurator behind the wall button and retested if magically OH can understand the button pressure but doesn’t. never loose the hope 
i will retry when you publish a new supported version for my devices