Variables in custom pages

Hi, i'm looking for a way to create a custom finish page which tells the user which components were installed. I am trying to set a variable when/if a component is installed, but i dont know if its possible to use a variable set in nsis in the .ini custom page, or another way i can change the results of the custom page depending on whether a function completes or not.

Any help, thanks guys

You can have variables in the strings you tell the MUI to use and set those before the finish page shows.