title: change the intent of pendingintent which is used by an alarmmanager
body: <p>i have set some alarm like:</p>
  
  <pre><code>public void SetAlarm(Context context, int tag, long time){
       AlarmManager am=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
       Intent i = new Intent(context, Alarm.class);
       i.putExtra("position", tag);
       PendingIntent pi = PendingIntent.getBroadcast(context, tag, i, PendingIntent.FLAG_CANCEL_CURRENT);
       am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+ time, pi); // Millisec * Second * Minute
  
   }
  </code></pre>
  
  <p>now for some reason i want to update the <code>Intent i</code> of a triggered alarm. i have the id(tag) for identify the desire alarm. how can i do that ?  </p>