Custom field to add user email to mailing list

I am redoing all of our Chronoforms version 5 to Chronoforms version 6 for a new website. One form is a member registration form. I need to send the users email
to the Mailman software in cpanel to join the mailing list.
​
I copied the existing php and I admit, I don't have a clue on writing php script. The field I need to send is called "email" and depending on their location, there are nine different mailing lists. This is the php in the custom field in setup that I used, however it does not work. (I have changed the mailing list name and address to protest the innocent!)
​
<?php
// set a default recipient
$recipient = 'em1';
if ( isset($form->data['recipients']) && $form->data['recipients'] ) {
$recipient = $form->data['recipients'];
}
$emails = array (
'em1' => 'list1-join@website.org',
'em2' => 'list2-join@website.org',
'em3' => 'list3-join@website.org',
'em4' => 'list4-join@website.org',
'em5' => 'list5-join@website.org',
'em6' => 'list6-join@website.org',
'em7' => 'list7-join@website.org',
'em8' => 'list8-join@website.org',
'em9' => 'list9-join@website.org' );
$form->data['email_to_use'] = $emails[$recipient];
?>
​
Any help would be greatly appreciated.
Best regards and Happy New Year!
Donna

$form->data is no longer used. You need
​

$this->data("field name", "default value if field empty")

And for a var call

$this->get("field name", "default value if field empty")

Thanks healyhatman, I'll give this a try.

OK, so far I have gotten the form to send information to the correct emails by using a Switch.
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But how do I write for the BODY the only information I want sent is the {data:confirm_email} field element?????
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Can anyone help with this???
​
Thank you in advance.
Donna

Never mind! Boy was I ever over thinking this.
​
Very simple: Set up a Switch to direct to the correct mailing list. Then set up an email. In the from field {data:field_name}.
​
Did NOT need to write anything in the body, just who the email was from, in this case the form subscriber!!!
​
Works fantastically!!!!
​
Thanks
Donna