Install file question

[NewsArchive]

Is there anyway to install a file in an installer only if it exists? For
example, I have the code in the attached image in a script. I only want
it to install if the variable is equals 1. And the file is only included
in the source folder it is needed.

I am getting an error stating that the file does not exist and compile
aborts. Is there an "If exists" method I'm missing.

TIA,

Bob