private static function getAU($user, $customers, $previousValue = 0)
 {
     $au = $previousValue;
     foreach ($customers as $customer) {
         foreach ($customer->paymentMethods() as $paymentMethod) {
             if (isset($paymentMethod->_attributes['subscriptions'])) {
                 foreach ($paymentMethod->_attributes['subscriptions'] as $subscription) {
                     if ($subscription->status == Braintree_Subscription::ACTIVE) {
                         $au++;
                         // needs a new custom events so the calculator runs normal
                         $newEvent = new Event();
                         $newEvent->date = Carbon::now()->format('Y-m-d');
                         $newEvent->eventID = str_random(32);
                         $newEvent->user = $user->id;
                         $newEvent->created = Carbon::now();
                         $newEvent->provider = 'connect';
                         $newEvent->type = 'customer.created';
                         $newEvent->object = '{}';
                         $newEvent->previousAttributes = null;
                         $newEvent->save();
                     }
                     // /if active
                 }
                 // /foreach subscription
             }
             // /if isset
         }
         // /foreach paymentMethod
     }
     // /foreach customer
     return $au;
 }