Multiple push notification on Android

Hey everyone,

I am facing the situation where when i send multiple push notification to my app they all show in the notification bar, when i open one of them the callback associated gets called and the coded behavior gets executed however when i open the second notification the code in the callback doesn't get executed but the application just opens. this is part of my code:

var CloudPush = require('ti.cloudpush');
            CloudPush.retrieveDeviceToken({
                success : successCb,
                error : errorCb
            });
            // Process incoming push notifications
            CloudPush.addEventListener('callback', function(evt) {
                var payload = JSON.parse(evt.payload);
                handlePushNotificationMessages(payload);
            });

when i open the first notification the callback code gets executed but when i open other notifications the app just opens as if it was launched from the drawer.

Thanks in advance