CGI parse and edit file

[ikkon]

I am trying to make a perl script that will open a CSS file add the CSS script into a textarea for editing then after hitting submit on the form save it back to the CSS file as easy as this should be I keep running into problems getting it to work.

#!/usr/bin/perl


BEGIN {
     use CGI::Carp qw(carpout confess);
     open(LOG, ">>","Entrance.log") or
       die("Unable to open mycgi-log: $!\n");
    carpout(LOG);
   }

#$SIG{__DIE__};
#$SIG{__WARN__};

use CGI qw(:standard);
use strict;

my $RoomName = 'Entrance';
my $CSS_Name = qq{$RoomName.css};

if (param('cssScript')) {
   write_file($CSS_Name, param('cssScript'));
}

my @CSS_Array = read_file($CSS_Name);
my $CSS_script = join("\n", @CSS_Array);

print header;
print start_html("$RoomName Edit"),
    h1("$RoomName CSS"),
    start_form;
print textarea(-name=>'cssScript',
              -default=>$CSS_script,
              -rows=>50,
              -columns=>75);
print p,
    submit,
    end_form,
    hr;


print end_html;


sub read_file
{
        my ( $f ) = @_;
        open F, "< $f" or die "Can't open $f : $!";
        my @f = <F>;
        close F;
        return wantarray ? @f : \@f;
}

sub write_file
    {
        my ( $f, @data ) = @_;
        @data = () unless @data;
        open F, "> $f" or die "Can't open $f : $!";
        print F @data;
        close F;
    }

Any Ideas what I am doing wrong?