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Added Support for LVars/HVars Access in MSFS via John Dowson's WASM Module.

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so I use  MSFSVariableServices.IsRunning , but it always return true. even I 'm not running MSFS2020.

Yes I can see that here as well. My DLL is just returning the value from the WASM module which seems to be wrong. I've asked John to take a look at this. 


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  • 1 month later...

There should be a section on the download page for "MSFSVariableServices Example Code". Expanding that, you should see buttons for the C# and VB download. 

If not, press [CTRL-F5] for force the browser to download the new version of the page. It may be using a cached version.


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I hope you're doing well, my friend.  I have a question pertaining to FBWA320 HVARs; specifically, I can manipulate all variable except for two:



            FsHVar hvar = this.VS.HVars[H:A320_Neo_FCU_HDG_INC];
            if (hvar != null)

Do you have any thoughts why these won't work?  They're included in the A320.hvar module file.  Any thoughts would be greatly appreciated   

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I don't know sorry. I can only suggest trying to set them with John's WASMClient.exe (from the FSUIPC WASM Module 0.5.5a.zip on fsuipc.com). If it doesn't work from there either then maybe ask John about it in the FSUIPC7/MSFS forum. 

If FBW have a support forum you might try asking there as well.


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