perl 改变对象属性

[root@wx03 test]# cat Critter.pm 
package Critter;
#unshift(@INC,"/root/test"); 
#use message;

sub new {
    my $self = {};
    my $invocant = shift;    
my $class = ref($invocant) || $invocant;
	my ($name)=@_;    
      my $self = {    
         "name" =>$name    
                 };  
    bless $self, $class; # Use class name to bless() reference
    return $self;

};

sub sum2 {
       $self=shift;
       my $a=shift;
       my $b=shift;
       return $a + $b;
};


sub fun1 {
       $self=shift;
       message::message($self);
};


sub fun2 {
       $self=shift;
       $i=shift;
       $var=$self->{owner};
       $self->{owner}="$var.$i";
};
sub on_receive_msg:lvalue{
      $self=shift;
      $self->{name}="aabbccdd123141242";
      $self->{on_receive_msg};
};

our $str="12312";
1;
[root@wx03 test]# cat t10.pl 
unshift(@INC,"/root/test"); 
use Horse;;
use Critter;
my $ua=Horse->new();


$ua->fun2($ARGV[0]);
print $ua->{owner};
print "
";

[root@wx03 test]# perl t10.pl  1
scan.1
[root@wx03 test]# perl t10.pl  2
scan.2
[root@wx03 test]# perl t10.pl  3
scan.3