Place Advanced Installer feature files in app data?

My application uses extensions that m开发者_C百科ust be placed in the the folder [AppDataFolder]\A\B\C... But Advanced Installer features do not allow me to put my files in a "system folder".

I really need a workaround for this limitation...

After 1 more hour of research, I have spotted an interesting piece of knowledge on the user manual.
"Uppercase identifier"
The trick was to have a folder with an uppercase identifier in the Files and Folders section. For this you either have to change the name of the folder to uppercase, like "LOL" or change it's identifier... somehow.