It works,
but how can I use some class proprieties inside FOREIGNBUILDARGS ?
for example, If I try:

has 'serverLocation' => (is=>'ro',isa=>'Str',default=>"$Bin/lib/seleni
+um-server-standalone-2.0b2.jar");

sub FOREIGNBUILDARGS {
    my $self = shift;

print $self->serverLocation;

     my %args  = ( @_ == 1 ? %{ $_[0] } : @_ );

     $args{host}//="localhost";
     $args{port}//=4444;
     $args{browser}//="*firefox";
     $args{browser_url}//='http://wwww.google.com';

    return %args;
}
[download]

I have this error:

Can't use string ("Selenium2") as a HASH ref while "strict refs" in us
+e at accessor serverLocation defined at /home/saintex/workspace/perl_
+scripts/navigator/classes/Browser/Selenium2.pm line 18.
[download]

because the propriety "serverLocation" has not been read yet.
How can I fix it?