{sysuserinfoorg} constant is empty - inno-setup

Question

I am using the following but the value of {sysuserinfoorg} is an empty string:
Data := 'UNINSTALL=' {sysuserinfoorg};
The above line returns 'UNINSTALL'.
I also tried ExpandConstant('{sysuserinfoorg}') with the same result.
I am using this in the DeinitializeUninstall procedure and sending the Data via HTTP post to my server which writes it to a log file. It all works but the {sysuserinfoorg} is empty. What I am after is some information that identifies the user and/or their organization. Inno Setup doc indicates {sysuserinfoorg} includes data from the registry on who the machine is registered to.

Answer 1

The ExpandConstant is the correct way:
Data := 'UNINSTALL=' + ExpandConstant('{sysuserinfoorg}');
The problem can be that there's actually no registered company.
Check the value of RegisteredOrganization value in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion key.
On my machine, it's empty, hence the {sysuserinfoorg} is empty too.
The mere {sysuserinfoorg} is nonsense in Pascal code.
Data := 'UNINSTALL=' {sysuserinfoorg};
The {...} is a comment in Pascal, as you can see with enabled syntax-highlighting.
Hence the code compiles as:
Data := 'UNINSTALL=';
You can also try to retrieve the value explicitly by reading registry:
if RegQueryStringValue(
HKEY_LOCAL_MACHINE_64, 'SOFTWARE\Microsoft\Windows NT\CurrentVersion',
'RegisteredOrganization', S) then
begin
Log('64-bit RegisteredOrganization = ' + S)
end
else
begin
Log('64-bit RegisteredOrganization is not defined')
end;
if RegQueryStringValue(
HKEY_LOCAL_MACHINE_32, 'SOFTWARE\Microsoft\Windows NT\CurrentVersion',
'RegisteredOrganization', S) then
begin
Log('32-bit RegisteredOrganization = ' + S)
end
else
begin
Log('32-bit RegisteredOrganization is not defined')
end;
Log('sysuserinfoname = ' + ExpandConstant('{sysuserinfoname}'));