Can I write to the Finish page after displaying it?

I use InstallOptions to set some fields on the Finish page in the "pre" Finish function, and I read the values set by the user in the "leave" Finish function. Up to here, it works fine. But depending on what values I read in the "leave" Finish function, I'd like to write an additional label field to the Finish page, to tell the user that what they selected will take a while, so they don't wonder for several seconds why the Finish page is not disappearing.

I think I read somewhere that you can't write to the Finish page after it's been displayed. Indeed, what I'm trying to do is not working- the extra label never shows up. Is there a way to do what I'm trying to do?

To modify the finish page on leave you have to use SendMessage with the appropriate message (defined in WinMessages.nsh) and then call Abort. There are hundreds of examples of this.
I don't think what you want to do will work because you aren't calling Abort. It'd be better to just display a banner with the Banner plugin.

Stu

Thanks. The Banner is a better solution. Working fine.