Hi,
The only thing that has been changed using this API is the size of the Ident field. Indeed, in MSFS 2020 it was a 6 length string whereas in MSFS 2024, it is a 9 length string. This changed has been made to handle very long helipad’s ident.
However, the API has been handled the version of the user to retrieve data that he can parse. A MSFS2020 addon (with a old version of SimConnect) will receive a old struct whereas a addon compiled with the MSFS SDK 2024 will receive a new struct.
I suspect that you wasm file is compiled with the MSFS SDK 2024 (so it is identified as a 2024 addon and will receive the new struct) but it uses the SimConnect.h from the MSFS 2020 sdk.
(or maybe the other way : a MSFS 2020 sdk with a newest SimConnect.h).
Could you check your project configuration or share it with us so we can investigate?
Best Regards
Maxime / Asobo