How to use new_direct_message with Net::Twitter::Lite - perl

Question

I'm trying to use in a script some DM functionalities and request.
My goal is on an event, sending a DM to a chosen follower.
For now, my working code is like this:
#!/usr/bin/perl
use strict;
use warnings;
use Net::Twitter::Lite::WithAPIv1_1;
my $twitter = Net::Twitter::Lite::WithAPIv1_1->new(
access_token_secret => 'XXX',
consumer_secret => 'XXX',
access_token => 'XXX',
consumer_key => 'XXX',
user_agent => 'Myself',
ssl => 1,
);
my $user = 'myself';
my $message_ack = "Hasta la vista, baby";
print "[sending: '$message_ack' to '$user'\n";
my $ack = $twitter->new_direct_message($user, $message_ack);
I have the following return:
# perl test.pl
[sending: 'Hasta la vista, baby' to 'myself'
new_direct_message expected 1 args at test.pl line 21.
I don't get is as the CPAN doc states that the 2 parameters given are required:
new_direct_message(user, text)
Parameters: user, text, screen_name, user_id, include_entities
Required: user, text
Sends a new direct message to the specified user from the
authenticating user. Requires both the user and text parameters.
Returns the sent message when successful. In order to support numeric
screen names, the screen_name or user_id parameters may be used
instead of user.
Returns: DirectMessage
Any hints on this one?
I've tried to google a bit on this, and I've found nothing really helpful. On some examples, they use the exact same thing as me (here for example: http://www.sevagas.com/Real-time-system-alerts-using-Twitter-OAuth-implementation on line 85)

Answer 1

I just figured it out with toolic comment.
So, there's the answer if someone ever have the same mistake :
Don't use
$twitter->new_direct_message($user, $message_ack);
but
$twitter->new_direct_message({ user => $user, text => $message_ack });
It looks like you have to pass a hashref, but I couldn't clearly see that hint in the doc.