Public Function myfn(arg As Double) As Double
    myfn = arg + Rnd()
End Function

##</code><code>##

#!perl

use 5.012; # strict, //
use warnings;
use Win32::OLE;

my $Excel = Win32::OLE->GetActiveObject('Excel.Application')
    || Win32::OLE->new('Excel.Application', 'Quit');

print "output = ", $Excel->Run('myfn', 17), "\n";

##</code><code>##

output = 17.468005657196