I using FreeFluids.TMedia you will need to use the old frontend.
This is done by checking the box at "Simulation Setup/Translation
flags/Enable old frontend for code generation"
Generated at 2026-05-09T18:18:56Z by OpenModelicaOpenModelica 1.26.7 using
GenerateDoc.mos
.FreeFluids.Pipes.Examples.SteamCondensing2Ph