Appointment_entity: fix bug while checking for differences of X-ADITO-ISALLDAYEVENT

entity/Appointment_entity/recordcontainers/jdito/onUpdate.js

@@ -83,7 +83,7 @@ function areEventAndFieldsDifferent(event){
         event[calendars.DTSTART] != vars.get("$field.BEGIN") ||
         event[calendars.DTEND] != vars.get("$field.END") ||
         event[calendars.HASREMINDER] != "false" ||
-        event["X-ADITO-ISALLDAYEVENT"] == vars.get("$field.ALLDAY") ||
+        event["X-ADITO-ISALLDAYEVENT"] != vars.get("$field.ALLDAY") ||
         event[calendars.CLASSIFICATION] != vars.get("$field.CLASSIFICATION") ||
         event[calendars.CATEGORIES] != vars.get("$field.CATEGORIES") ||
         event[calendars.AFFECTEDUSERS] != vars.get("$field.ATTENDEES") ||