Local Notifications not showing in specific time

Ionic Framework
1

l am using ionic 4 , l use Native plugin local notifications to show up notifications in specific time .

l use this code to show me notification in 5 pm in local time of device but he doesn’t show !

this.localNotifications.schedule({
   text: 'Hi ',
   trigger: {at: new Date(new Date().getTime(),5 *1000)},
   led: 'FF0000',
   sound: null
});

l follow up this doc of plugin here but it is same problem not showing any notification .

he is working only if l delete ,5 *1000 from trigger and he is showing notification in repeating way .

any idea please ?