ProgramFilesFolder64 not returning value as expected with Wow64 plugin

[wwojo]

Since
g_ProgramFiles64Folder = SessionVar.Expand("%ProgramFilesFolder64%");

returns the x86 PFF, I would expect the following would get the correct PFF value on a 64 bit machine:
Wow64.DisableFsRedirection();
g_ProgramFiles64Folder = SessionVar.Expand("%ProgramFilesFolder64%");
Wow64.RevertFsRedirection();
iManageLog("PFF is: " .. g_ProgramFiles64Folder .. "\r\n");

but I still see:
[08/26/2020 10:55:13] PFF is: C:\Program Files (x86)

any help on what is being done incorrectly?

[Ulrich]

In TrueUpdate, %ProgramFilesFolder64% is not defined in its current version (3.8.1.0), so you cannot use it as a built-in session variable.

Instead, try this approach to get the folder, this should work:

if not System.Is64BitOS() then
    Dialog.Message("64-bit Program Files", "This is a 32-bit environment!");
else
   sFolder = os.getenv("ProgramW6432");
   if (sFolder == nil) then
      sFolder = os.getenv("ProgramFiles");
   end
   if (sFolder == nil) then
      sFolder = Registry.GetValue(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows\\CurrentVersion" , "ProgramFilesDir", false)
   end

   if (sFolder ~= "" and sFolder ~= nil) then
      Dialog.Message("64-bit Program Files", sFolder);
   else
      Dialog.Message("64-bit Program Files", "unable to retrieve");
   end
end

Ulrich