Form Submission Third Party CRM (Act-On)

Hi.

I am trying to add the submitted form information to a third party CRM (Act-On, https://www.actonsoftware.com). I have read the documentation here and I have some questions.

I am trying to follow the the instructions from here:

http://www.gravityhelp.com/documentation/page/Gform_after_submission

I have created a simple First Name, Last Name and Company form as a test on both Act-On and Gravity Forms. I am NOT using the advanced fields for first name and last, just the single text ones.

I cannot get this to work. Here is what I have in my functions.php file:

add_action('gform_after_submission_11', 'post_to_third_party', 10, 2);
function post_to_third_party($entry, $form) {
$post_url = 'myurl-to-form';
$body = array(
        'First Name' => $entry['1'],
        'Last Name' => $entry['3'],
        'Company' => $entry['2']
        );
    $request = new WP_Http();
    $response = $request->post($post_url, array('body' => $body));
}

So lets take this one step at a time:
add_action('gform_after_submission_11', 'post_to_third_party', 10, 2);

What is 10, 2? I cannot seem to find a reference what these numbers represent.

From here:
http://www.gravityhelp.com/documentation/page/Entry_Object

$entry["date_created"];   // returns the entry date
$entry["1"];     // returns the value associated with field 1
$entry["1.3"];   // returns the value associated with the first name portion of a simple name field 1
$entry["1.6"];   // returns the value associated with the last name portion of a simple name field 1
$entry["2.4"];   // returns the value associated with the street input for the address field 2

The first example, I understand. The entry from field 1.
The second entry I dont understand. I assume the 1 in 1.3 means Field 1? And where does the 3 come from? If I have a advanced name field, I would assume this would read 1.1 for first name and 1.2 for last name? So where does the 6 in Last name come from?

Do I have to add every field for the data to be submitted? ( 'First Name' => $entry['1'] etc).
Is there a way for it to submit all fields?

According to the documentation on Act-On, as long as the form I submitted on Gravity Forms has the same labels as the form on Act-On, it should work.