Found vars but how do I use them? | MobiFlight | Page 1

umbral basin Nov 15, 2025, 1:55 AM

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I have found the following in dev mode:
When the end value is 1 it's a switch set to auto and when 0 it's manual. How do I implemetn this into Mobiflight?

noble heart Nov 15, 2025, 1:56 AM

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O: vars are not accessible from outside.

umbral basin Nov 15, 2025, 1:59 AM

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ok, cheers Jamie, it was to be an answer for somebody asking about the fuel switch.

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are they part a templete

noble heart Nov 15, 2025, 2:00 AM

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show me what the dev mode, input events code for that

umbral basin Nov 15, 2025, 2:00 AM

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noble heart Nov 15, 2025, 2:02 AM

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put the set event in the control panel

umbral basin Nov 15, 2025, 2:03 AM

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bugger just took that off 🙂

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noble heart Nov 15, 2025, 2:04 AM

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Come on Steve, you need to uncheck Minimize and press the reload user container button

umbral basin Nov 15, 2025, 2:05 AM

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oh fiddle,l forgot

noble heart Nov 15, 2025, 2:05 AM

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No code is shown while the sim is in optimized mode

umbral basin Nov 15, 2025, 2:09 AM

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have I done that right?

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odd flax Nov 15, 2025, 2:52 AM

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Mmm, doesn't look quite right, that code isn't setting the value at all

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make sure to follow the steps in the link the bot's about to send, it'll have info on how to display the right part

pale whaleBOT Nov 15, 2025, 2:52 AM

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You can use the developer tools in MSFS2020 to find the code for the input events. See this blog post for details on how to do it: Uncovering input events using the MSFS2020 behavior dialog

Bad Casserole

Neil E.

Uncovering input events using the MSFS2020 model behavior dialog

umbral basin Nov 15, 2025, 2:54 AM

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This is with the dev mode, if you set the values and use execute, the switch does move. Jamie has been helping a little, it's now a long day for me and I need to sleep soon

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somebody else was asking about this switch but nobody had answered earlier and thouight it would be as easy as the Vulcan inputs I found but it's not. Incidentaly, this switch is on the TBM930

umbral basin Nov 15, 2025, 6:28 PM

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Hi Jamie, looking on Hubhop and I see you did all the fuel switches apart from this one, that should have given me a clue.

noble heart Nov 15, 2025, 11:00 PM

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umbral basin Hi Jamie, looking on Hubhop and I see you did all the fuel switches apart from t...

Hi. I now had a chance to look at the TBM930 in MSFS2020. This is the Input Events code for the Fuel Selector Knob

umbral basin Nov 15, 2025, 11:08 PM

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Hi Jamie, cheers, I didn't look at selector 1 at all with the other function being auto/manual and the execute from that operating the switch, it is a switch not a knob. Didn't you say you couldn't use O vars? The function for the switch is lowerdown in that list, in the VC it's on the upper panel on the RHS half.

noble heart Nov 15, 2025, 11:18 PM

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You still can't use O: vars from outside, but the action is really done by (>K:FUEL_SELECTOR_SET)

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With prefixed values of 0 for OFF, 2 for LEFT and 3 for RIGHT

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The toggle event in Hubhop works ok. I tested it.

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Toggling between 2 and 3

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is this not what you were looking for?

umbral basin Nov 15, 2025, 11:27 PM

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I've used that and yes it woks but it's for the fuel control below the throttle, the switch I was looking at was for somebody else and it's on the upper panel, I did try K, L etc but didn't get it working. I may have to go off line. I didn't sleep last night.

noble heart Nov 15, 2025, 11:30 PM

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ahh I see it now.

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Unfortunately, the code only uses o: vars so not much we can do from outside.
The only way would be to access the B: event through an xml file hack.

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It involves hooking a custom Lvar that we can control to call the B: event.

spice cipher Nov 16, 2025, 6:34 AM

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that B: event should work in msfs2024 , but unfortunately not in 2020

umbral basin Nov 16, 2025, 10:11 PM

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The hacking then is going to be similar to what we did with the Lancaster, I was hoping to help somebody else with this tbm930.

weary beacon Nov 16, 2025, 10:15 PM

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don't know if it works still as its a couple of years old but you could try this - https://flightsim.to/file/57918/tbm930-lvars-for-bleed-inert-and-cabin-lights

Flightsim.to

TBM930 - LVars for Bleed Air, Inert Sep and Cabin Lights for Micros...

✓ TBM930 - LVars for Bleed Air, Inert Sep and Cabin Lights is a Microsoft Flight Simulator 2020 mod created by FlyingDutch. Enhance your TBM930 experience with this mod featuring LVars for bleed air, inert sep, cabin lights, ignition, and fuel selector. Easily implement these new features by downloading and placing the...

noble heart Nov 16, 2025, 10:59 PM

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Interesting, I think this addon uses the xml file hack I was referring to.

umbral basin Nov 17, 2025, 12:33 AM

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Have tried these: on press 2 (>L:TBM930_FUEL_SELECTION_SET) and on release 1(>L:TBM930_FUEL_SELECTION_SET) and they didn't work.

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Can see where if I'm reading it right, it tries to write to the B var

noble heart Nov 17, 2025, 1:50 AM

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If this is like the xml hack, you set the Lvar value one higher than what you want to send to the B: event.

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The code will auto reset the variable to 0.

umbral basin Nov 17, 2025, 1:51 AM

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either way, 1 or 2 it doesn't move.

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these are 1 higher than what the Dev mode shows.

noble heart Nov 17, 2025, 1:52 AM

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1 will send 0 to the b:event

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Only use on Press

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Unless it is a latching switch

umbral basin Nov 17, 2025, 1:53 AM

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I have on press and on release

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latching

noble heart Nov 17, 2025, 1:53 AM

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OK. Show me.

umbral basin Nov 17, 2025, 1:54 AM

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awkward, I'm on a low level like I did in the jet. give me a min

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noble heart Nov 17, 2025, 1:55 AM

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OK you are missing a space after the number

umbral basin Nov 17, 2025, 1:55 AM

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no movement at all of the switch

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I've already tried that

noble heart Nov 17, 2025, 1:57 AM

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Also you can check that the Lvar auto resets to 0 confirming the code is working.

umbral basin Nov 17, 2025, 1:57 AM

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I setup 2 controls one, without space and one with and only enabled 1 at a time

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you mean watch the var in dev mode?

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or in the values in MF?

noble heart Nov 17, 2025, 1:58 AM

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Both ways can work

umbral basin Nov 17, 2025, 1:59 AM

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I saw no change when running dev mode

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was 1st thjing I did when it didn't work

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let mje reload the tbm.

noble heart Nov 17, 2025, 2:00 AM

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If there is no auto reset I would suspect the xml code is not working

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Are you sure the addon is in the Community folder? Did you restart msfs after installing the addon?

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Full restart of msfs is required.

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The VFS is only created once at start.

umbral basin Nov 17, 2025, 2:02 AM

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I didn't have the sim running when I put it there and I have already restarted at least once just in case.

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lol. you've missed the screen shot i did earlier of the community folder

noble heart Nov 17, 2025, 2:15 AM

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Right now, since there is no auto reset to 0, I would suspect either the addon is not running or the Lvar name is not correct.

umbral basin Nov 17, 2025, 2:17 AM

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Is it worth chnage set to position?

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I'll have a look at the xml file for names

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could it be (L:TBM930_FUEL_SELECTION_SET, Number)

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or is that just setting a number to be passed to the B var

noble heart Nov 17, 2025, 2:30 AM

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umbral basin Is it worth chnage set to position?

The addon Lvars are new and none of the Lvars used by the aircraft. It just passes a value to the b: event.

umbral basin Nov 17, 2025, 2:30 AM

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number was the problem

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Number was the problem 🙂

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I looked at the xml file

noble heart Nov 17, 2025, 2:31 AM

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Lack of the units "number"?

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I would have never thought it was required.

umbral basin Nov 17, 2025, 2:32 AM

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let me grab screen shot from flightsim.to

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2 (>L:TBM930_FUEL_SELECTION_SET, number)

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not that, that's from the xml which works.

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this was from the mod on flightsim.tom

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so changing set to number fixed it

noble heart Nov 17, 2025, 2:35 AM

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You mean adding number?

umbral basin Nov 17, 2025, 2:35 AM

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This is all I did

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typo above, added number

noble heart Nov 17, 2025, 2:35 AM

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Ok

umbral basin Nov 17, 2025, 2:36 AM

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There's a slight delay but that could be my gear

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I'm using a switch on my radio control gear.

noble heart Nov 17, 2025, 2:37 AM

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There is probably a one second poll rate

umbral basin Nov 17, 2025, 2:40 AM

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well it's my radio control in emulation of joystick mode so more processing. On that line above must it have the 2 or 1 at the beginning.

noble heart Nov 17, 2025, 2:40 AM

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Yes, you need to set a value different from 0

umbral basin Nov 17, 2025, 2:41 AM

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ok cheers. I'll pass this onto the other gut that had originally asked about it, think you had a chat with him.

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I'll have a quick test with none latching then let them know.

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none latching ok.

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but I would prob swap press to release and vice versa

noble heart Nov 17, 2025, 2:44 AM

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Any method to set an Lvar value ought to work

umbral basin Nov 17, 2025, 2:44 AM

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leaving Auto as the un pressed condition

#Found vars but how do I use them?