I created an installer where it also adds onto the path for Environment.
But let's say we install the software twice, it would also insert twice on the registry which I don't want to happen.
I tried using the Flag: createvalueifdoesntexist but it seems it doesn't work, as even there is no value that is the same, it won't insert.
This what happens...
1st Installation:
C:\Test
2nd Installation:
C:\Test; C:\Test
This what inside my [registry] section:
Root: HKA; Subkey: "SYSTEM\CurrentControlSet\Control\Session Manager\Environment";
ValueType:string; ValueName: "PathTest"; ValueData: "{olddata}; {app}\ASA";
Flags: preservestringtype createvalueifdoesntexist
(formatted with linebreaks for readability)