[iOS] Questions about the events on the calendar

hello to all guys

I'm trying to finish my third app (thanks to you and your support , two of my apps are already on appstore :) ), the only part I'm missing is that of adding events to the calendar iOS.

I've already checked the documentation, but it is very rich on this topic ... I also checked if there was any project on github, but nothing even there ... none of the questions about Appcelerator talk about this topic, so I decided to ask you not finding any useful information ...

for now I have this code (add an event to the calendar, the beginning of the event shows an alert, but in the end no and I do not know why) , I extrapolated from the documentation

var defCalendar = Ti.Calendar.defaultCalendar;
 
    var date1 = new Date(new Date().getTime() + 3000), date2 = new Date(new Date().getTime() + 180000);
 
    Ti.API.info('Date1 : ' + date1 + 'Date2 : ' + date2);
 
    var event1 = defCalendar.createEvent({
        title : 'Artioli',
        notes : 'Ricordati di comprare le lenti!',
        location : 'Ottica Artioli - Milano',
        begin : date1,
        end : date2,
        availability : Ti.Calendar.AVAILABILITY_FREE,
        allDay : false,
    });
 
    var alert1 = event1.createAlert({
 
        absoluteDate : new Date(new Date().getTime() - (1000 * 60 * 20))
 
    });
 
    var alert2 = event1.createAlert({
 
        relativeOffset : -(60 * 15)
 
    })
 
    var allAlerts = new Array(alert1, alert2);
 
    event1.alerts = allAlerts;
 
    event1.save(Ti.Calendar.SPAN_THISEVENT);

var newRule = event1.createRecurenceRule({
    frequency : Ti.Calendar.RECURRENCEFREQUENCY_MONTHLY,
    interval : 1,
    daysOfTheWeek : [{
    dayOfWeek : 1,
    week : 2
    }, {
    dayOfWeek : 2
    }],
    end : {
    occurrenceCount : 10
    }
 
    });
 
    event1.recurrenceRules = [newRule];

I wanted to know if we could create an event on the calendar with a single IOS ALERT warning, or at least if we could create a calendar event, and at the end of it I would like the user to be alerted by an ALERT

the code posted above uses a start date and an end date, you can not create an event with a single date is not it?

thanks