Where to enter code in Event switcher

In Chronoforms v5 there was a box for code in Event Switcher. That area does not exist in Chronoform v6. I'm not sure where to enter the code for event switcher then? Instead there is a box "Data Provider" in V6, which I'm assuming has something to do with this, but I don't know how to use it.
I appreciate any input.

Hi omidhz,

Yes, in v6 you can do the same but using 2 actions:
#1- a PHP action, will take the PHP code withOUT tags, and will "return" some value.
#2- an Event switcher, and in the data provider please use this: {var:php_function_name}, where "php_function_name" is the name of the PHP function (the name of any action is inside a black label)

Best regards,
Max

Max,
Thank you for your quick reply.
Here is what I did so far:
I have a php with name age_calculator. I placed it as first action in submit. Here is my php code that I'm using to calculate age based on the date of birth entered in the form:

// Simplify variables
$dob = $form->data['dob'];

//Calculate Age
//explode the date to get month, day and year
  $dob = explode("/", $dob);
  //get age from date or birthdate
  $age = (date("md", date("U", mktime(0, 0, 0, $dob[0], $dob[1], $dob[2]))) > date("md")
    ? ((date("Y") - $dob[2]) - 1)
    : (date("Y") - $dob[2]));

$form->data['age'] = $age;

// Load appropriate event from event Switcher.

if ( $form->data['age'] >= 18 ) {
  return 'adult';
 break;
} else {
  return 'young';
  break;
}

Then I have event switcher, with following settings:
Data Provider: {var:age_calculator}
Events: adult,young
I have an event loader in each event that should load appropriate event.
Unfortunately, this form is running the first event (adult) every time no matter what the date of birth is. Here is my debug data:

Array
(
    [option] => com_chronoforms6
    [chronoform] => pps-0-age
    [event] => submit
    [dob] => 08/12/1971
    [submit] => 
)

It seems like my php code is not calculating the age appropriately. I think I have a problem with how I'm calling the variables, but I'm not sure how. This is the same php code that I used in v5 and it worked perfect.

Attached is a screenshot of my Events for better clarification.
Thanks again. I love V6 and I don't want to go back to V5. I'm converting all my forms to V6

Thanks Max.
That did the trick.