[ChronoForms 6] How to insert code in Event Switcher?

Hello,
i have a php with name "checkspam" that return 2 value, "spam" and "nospam".

include (JPATH_SITE.'/components/com_chronoforms6/extras/php-spam-filter-master/spamfilter.php');
$blacklists = array(
  'blacklist-misc.txt',
  'blacklist-medication.txt',
);
$filter = new SpamFilter($blacklists);
$result = $filter->check_text($this->data['messaggio']);
if ( $result ) {
   return 'spam';
} else
{
  return 'nospam';
}

Then I have a Event Switcher, with 2 different events (spam and nospam). I attach a screenshot for better clarification. If i enter in event "nospam", the message "message37" doesn't appear.
​
​
This is my debugger:
​

Array
(
    [option] => com_chronoforms6
    [cont] => manager
    [chronoform] => form-test-spam
    [event] => submit
    [messaggio] => test
    [button45] => 
)

Array
(
    [checkspam] => Array
        (
            [returned] => nospam
            [var] => nospam
        )

)

​
Could you help me? Thanks in advance,
regards
​
Daniele

Need to see your event switcher settings itself not just the branches

Hi, thanks for reply.
I attach the event switcher settings, that invoke 2 different events
​
Thanks very much, i hope you can help me!

{var:checkSpam}

thanks, it works!
best regards