try {
                    var endDate:NotesDateTime = null;
                    if(!docEv.getItemValue("FinishDate").isEmpty()){
                        endDate = docEv.getItemValue("FinishDate").elementAt(0);
                    }else{
                        endDate = session.createDateTime(@Now());
                    }
                }catch(e){
                    print("endDate: " + e.toString())
                }

function getCalObj(){
var viewEv:NotesView = database.getView("Diary");
var doc:NotesDocument = diaryDoc.getDocument();
var sUNID = doc.getUniversalID();
var dcEv:NotesDocumentCollection = viewEv.getAllDocumentsByKey(sUNID);
if(dcEv.getCount() != 0){
    var docEv:NotesDocument = dcEv.getFirstDocument();
    var calendarData = '';
    try {
        while (docEv != null) {
            var pattern = new java.text.SimpleDateFormat("yyyy-MM-dd");
                try {
                    var calDate:NotesDateTime = docEv.getItemValue("QueryStartDate").elementAt(0);
                }catch(e){
                    print("calDate: " + e.toString());
                }
                try {
                    var endDate:NotesDateTime = null; //check if date is empty
                    if(!docEv.getItemValue("FinishDate").isEmpty()){
                        endDate = docEv.getItemValue("FinishDate").elementAt(0);
                    }else{
                        endDate = session.createDateTime(@Now()); // if endDate is null replace with todays date
                    }
                }catch(e){
                    print("endDate: " + e.toString())
                }
                try{
                    .........
                }catch(e){
                    print("Cal data error" + e.toString());
                }
            var tmpdocEv = viewEv.getNextDocument(docEv);
            docEv.recycle();
            docEv = tmpdocEv;
        }
    } catch(e) {
        print("DocEv Loop Error: " + e.toString()); //error, read below
        //DocEv Loop Error: Exception occured calling method NotesView.getNextDocument(lotus.domino.local.Document)
    };
};

var tmpdocEv = dcEv.getNextDocument(docEv);