A new class called MSFSVariableServices has been added to the FSUIPCClient dll from Version 3.2.1-Beta.
This module allows direct access to LVars and HVars for MSFS. Other Flight Sims (e.g. P3D) are NOT supported.
It uses John Dowson's WASM module for MSFS which must be installed in your MSFS and will also need to be installed in your users' MSFS. This module is installed by the FSUIPC7 installer.
This facility is completely independent