Simvars 'MASTER CAUTION ACTIVE ' and 'MASTER WARNING ACTIVE' do not work on Helicopters

I’m developing the AW139 twin engine helicopter using part of the integrated
avionics of the CJ4 because it is very similar to the Phase7 integrated
avionics of this helicopter, unfortunately some Simvars are usable only for
Airplane and not for Helicopters, in particular 'MASTER CAUTION ACTIVE ’ and
‘MASTER WARNING ACTIVE’. To do some tests I tried to import CJ4 avionics in
many Airplane and Helicopters like CabriG2,Bell407,etc…, on all the Airplane
it works correctly but on any Helicopter the variables don’t work. Do you know
if these and other variables will be available for Helicopters into the new

These are working fine on my native helicopter: SimVar.GetSimVarValue("MASTER WARNING ACTIVE", "Bool"); SimVar.SetSimVarValue("K:MASTER_WARNING_SET", "Bool", 1); // or 0 Using
avionics from fixed wing is likely to run into this problem though: There appears to be a big
chunk of the sim that diverges for helicopters, and for now this excludes
helicopter from other avionics packages working directly. So you may need to
look deeper to find the actual API which is failing.

Hello and thanks for your reply! On which model of native helicopter does it work for you? Have you tried adding CJ4 avionics to any helicopters and tried the Caution's reset function? I don't mean just turning off the lighted button but resetting the CAS in the MFD

I tested the events and simvar on our H145. It seems the basic function works,
and the fault will be deeper within the avionics stack you are trying to load.
Since the sim has “a different simulation mode” for helicopters, the work done
by Working Title and other teams is currently unusable for helicopters. It’s
too much code for me to check, but the CJ4 was completely redone by WT and now
appears to use the new stuff which is unavailable as a helicopter.

Now it seems to work correctly, maybe they have updated something but I didn’t
find anything in the report… it’s very convenient to write Caution,Warning
and Advisory in the panel.xml and be able to reset them, I’m trying to import
the entire Cj4 CAS system to the AW139 , obviously with the parameters
dedicated to the helicopter… thanks for the advice, I love your 145 and I’m
using it as an example for AFCS systems and other system. I developed AW139 on
Prepar3dv4/v5 writing flight dynamics, Phase7 integrated avinonics, AFCS,
systems, studying all operation manuals, now I want to report everything on
MSFS2020 with the new CFD and your 145 is an AMAZING example for me.