How can I correctly pass unique extras to a pending intent?

I'm having a problem with alarmManager and the pending intent with extras that will go along with it.

If I set multiple alarms, they will go off, however the extras stay the same.

I have already read into these questions:

• android pending intent notification problem
• Android keeps caching my intents Extras, how to declare a pending intent that keeps fresh extras?

and I have tried:

• assigning a unique ID to each pending intent and
• using all the pending intent flags,

all to no avail. I have no clue why it will not work.

Here is a code snippet:

Intent intent = new Intent(con,
                    AppointmentNotificationReciever.class);
            intent.putExtra("foo", bar.toString());


            int id = randomNum;

            PendingIntent sender = PendingIntent.getBroadcast(con, id,
                    intent, PendingIntent.FLAG_UPDATE_CURRENT);


            AlarmManager am = (AlarmManager) con.getSystemService(Context.ALARM_SERVICE);
            am.set(AlarmManager.RTC_WAKEUP, scheduleExecution, sender);

Possibly two different issues here:

1) If you've already created your PendingIntent before and it "matches" an existing PendingIntent, then you must specify the PendingIntent.FLAG_UPDATE_CURRENT flag or it will not pass the extras. A "match" is based on the criteria that Intent.filterEquals() uses, so definitely read the docs there and make sure you understand the data, action, type, etc.

2) I've read that if you do NOT set an action on your intent, then it will not propagate the extras, so perhaps try intent.setAction("com.blah.Action").