Create new form entry on submission of a different form

//add email address to email list after membership submission

add_action('frm_after_create_entry', 'add_email_to_list', 30, 2);

function add_email_to_list($entry_id, $form_id){
 
 if($form_id == 2){ //id of the form
  if(isset($_POST['item_meta'][29])){ //email field
    $email = $_POST['item_meta'][29]; 
    
	
//Random dynamic string of length 5
    
$characters = '0123456789abcdefghijklmnopqrstuvwxyz';
$string = '';

for ($i = 0; $i < $length; $i++) {
$string .= $characters[mt_rand(0, strlen($characters) - 1)];
}

// create entry.
FrmEntry::create(array(
            'form_id' => 4,
		'item_key' => $string, 
		'item_meta' => array(34 => $email,),
		));	

  }//isset end
	
 }//end form_id 2
 
}