Just an HVar question

[DaveSCUSA]

John,

Do you know any add on that can list HVars of an active aircraft. If it's FSUIPC7, I can't find how. The list HVars doesn't show anything for the Phenom PH100. There are LVars listed.

Thanks

[John Dowson]

In short, no. You can only discover/find hvars either by inspecting the xml code of the aircraft, or if published in the aircraft documentation.
There is no method (that I know of) to discover hvars by any other means, not even programmatically. This is why you need to provide a file to tell FSUIPC what hvars are available, if you want to use them.

Also, it seems to me that hvars have fallen out of favor. Many early MSFS2020 aircraft used them, but later ones have switched to b-vars/input events.

If using hvars, I think its better to use them via presets and forget about the *.hvar files. The direct access to hvars was added before the preset/calculator code interface was added. As hvars have no state/value (they can just be triggered), there is really no need for these to be known by FSUIPC, and better/easier to just trigger them via calc code or a preset.

John

[DaveSCUSA]

Thanks