Auto action code not firing?

I recommend making sure your code is working fine first before making it dependent on a trigger. Use hardcoded sample data in it when doing that test just to be sure it functions as expected. The trigger itself should be firing fine assuming the mass mailer actually sent anything as that trigger only fires if a PM/Email was successfully sent.

I HAVE tested my code and it works - it is only a question about getting the correct variables from CB.

You have full access to the CB user object with $user if you've adjusted your auto action as instructed earlier. So you can do things like $user->getString( 'email' ) to get the email or by using a substitution. Your code personally doesn't look functional to me as you're trying to cast the $user object set to $result to a string in your IF condition. Looks like $result is meant to be their phone number? So $result probably needs to be $user->getString( 'cb_phone_1' ) I'm guessing. Sorry, I can't help you with custom coding, but the issue seams to be with that code.

Perfect - that was the info I needed. My code now looks like this:

if($user->getString('cb_phone_1')<>'' || $user->getString('cb_phone_2')<>''){ //Only if number has been entered in phone field
$mode = 'send';
if ($user->getString('cb_phone_1')<>'') {$phone[] = "45" . $user->getString('cb_phone_1');}
if ($user->getString('cb_phone_2')<>'') {$phone[] = "45" . $user->getString('cb_phone_2');}

$message = "Hej\n\nDu har stadig ikke betalt dit ventelistegebyr! Du vil blive slettet fra ventelisten inden 5 dage, hvis du ikke betaler! For hjælp skriv til vente@xxxxxx.dk, med dit ventelistenummer (" . $user->getString('cb_waitingnumber') . ").
\n\nDu kan IKKE svare på denne SMS!";

//set POST variables
$url = ' api.xxxxxx.dk/v2/send ';
//$message = rawurlencode($message);
$fields = array(
        'to' =>  $phone,
    'message' => $message,
    'from' => 'xxxxxx'
    );

$fields_string = json_encode($fields);

//open connection
$ch = curl_init();
//set the url, number of POST vars, POST data
$headers = array(
"Accept: application/json",
"Authorization: Basic xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"Content-Type: application/json",
);
curl_setopt($ch,CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_PORT, $serverport);
curl_setopt($ch,CURLOPT_POST, count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch,CURLOPT_RETURNTRANSFER, true);
                    
//execute post
$response = curl_exec($ch);
//close connection
curl_close($ch);
mail("mail@xxxxxx.dk","Mail fra xxxxxxx - husk at slå fra igen !!",$response);