sub cleararray {
    my $self = shift;
    for ( $i = 0; $self->radiovar(); $i++ ) {
        for ( $j = 0; $self->radiovar(); $j++ ) {
            @{$self->array()}[$i][$j] = undef;
        }
    }
}

##</code><code>##

sub radiovar {
    my ( $self, $newval ) = @_;

    $self->{'radiovar'} = $newval if defined( $newval );

    return $self->{'radiovar'};
}

sub array {
    my ( $self, $newval ) = shift;
    $self->{'array'} = $newval if defined( $newval );
    return $self->{'array'};
}

##</code><code>##

package X;
...
my $radiovar;
...
sub radiovar {
   my $newval = shift;

   $radiovar = $newval if defined( $newval );
   return $radiovar;
}