MobiFlight Community Support

I have a button that just increments a Mobiflight variable "SetMode".
When this variable is reaching 9 it is set to 0.

I also have a number of input actions with a singe rotary encoder, that will work if "SetMode" has a certain value.
So I can cycle through all possible modes with a single button and change values of the autopilot with a single encoder.
I made this for "blind" use in VR.
I cannot see, what will be changed, i.e. which value the variable has.
So I added sound output via FSUIPC lua scripts.
Thes scripts just contain a single command:
sound.play("NAV.wav", 3)
for example.
It tells me, which mode I have entered.
I created for each mode an output config with the choosen Sim Variable "Mobiflight Variable" and a pre-condition SetMode = something.

On the Display Tab I choose the type "Input Action" and set it "OnChange"
Now the Lua scripts only run once after Mobiflight is started (and SetMode has the correct value).
I cycle thru the modes and it is never triggered again.
The same when I use "OnPress / On Release" instead of "On Change".

Why is this? The value changes, but not when the pre-condition is met. In this moment it has the old value of the last time, the pre-condition was met.
Is this the reason, it does not work?

I tried different things, but nothing helped except this funny workaraound:

Instead of using "Mobiflight Variable" as recognized Sim variable, I used the Sim Connect Variable
Microsoft - Generic - Evironment - LOCAL TIME, to get a always changing value.
Set it to "OnChange" and it works!
But only when switching to the next mode - which is too late (Sound plays for the former mode).
I can handle this by setting the pre-condition SetMode value for the previous one. OK. Works, but feels a bit quirky.

I do not understand why it behvaves this way. Is this intented to work like this?
Would mean: "OnChange" is triggered, when the value of a Mobiflight variable differs from the value of the last time, the pre-condition is met?

Any other idea to get this working in a more elegant way?

Hey, your use case sounds super interesting. Please join us on the Discord to interactively figure it out.

I think you should be able to use a MobiFlight variable and a Output Input Action... Just make sure that you are using "@" as value placeholder instead of the normal "$"
Because you are right: OnChange will only trigger if the value changes. so for some reason your value isn't and I can see that it could be because of $ vs @.