The SYNOPSIS section from the documentation for the module shows exactly how to do what you're asking in this thread, and shows an example of what follow should contain:

Here's the third example in the SYNOPSIS section:

use File::Find;
find({ wanted => \&process, follow => 1 }, '.');
[download]

thanks a lot Dave, that solved my problem! :-)

A true value if you want the option to take effect, a false value otherwise. See follow.

thanks a lot hippo, that clears things up! :-)

What part of "there in the documentation" don't you understand? Learning to use documentation is an important part of learning to write code, or indeed doing many things in life.