Definition of Simulation Variables?

[MSFS 2020] Questions & Community Discussions SDK: Tools/Samples/Documentation
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Hi,

I don’t know how many time I’ll have to preface my posts with “I’m new to MSFS development.” :smiley: At the moment I’m trying to understand what are all these different variable types within the SDK.

  • SimVars
  • LVars
  • B:Events
  • K:[something]
  • A:[whatever]
  • etc

I looked through the documentation, but I haven’t found an area that really defines them. What I’m concluding is:

  • SimVars (aka Simulation Variables) are proprietary variables that may kick off events. So if you trigger one SimVar it can effect a chain of other variables. I also think that A: is another way of stating SimVars!?
  • LVars seem to just be standard variables.
  • B:events – Not sure

Also why A:, B:, K:, etc? What purpose does this naming schema provide?

https://docs.flightsimulator.com/html/Programming_Tools/Programming_APIs.htm

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https://docs.flightsimulator.com/html/Additional_Information/Reverse_Polish_Notation.htm#Types

3

Oh my goodness… such a simple answer/solution. How embarrassing. Thank you.

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