I would like to change the email subject before the program exists now I was able to do it by replacing the Email appender with a new one in the script as shown in the method below. I want to know if its possible to get the existing appender and modify its properties instead of replacing it.

sub update_email_logger {
    my $subject  = shift;
    my $logger   = Log::Log4perl::get_logger();
    my $pattern  = Log::Log4perl::Layout::PatternLayout->new( "%d{yyyy
+-MM-dd HH:mm:ss} %p: %m<br/>" );
    my $appender = Log::Log4perl::Appender->new(
        "Log::Dispatch::Email::MailSender",
        name      => "Email",
        to        => $EMAIL_NOTIFICATION,
        subject   => $subject,
        from      => 'myemail@gmail.com',
        smtp      => $SMTP_SERVER,
        Threshold => 'DEBUG',
    );
    $appender->layout( $pattern );
    $logger->add_appender( $appender );
}
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