Trying to change the INSTALLDIR value to $APPDATA, but won't work. : <!-- What are you trying to accomplish? (Please include sample data.) -->
I'm trying to make an installer to extract some texture packs and stuff into the AppData folder, but keeps changing to program files. (Its for school, they have a gaming club, so I wanted shaders and stuff at it. )
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    Heres the code in a pastebin link: https://pastebin.com/raw/cdwEjsE4

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Any ideas on what i need to change?

