What the error code means: Bad arguments to

[Taifun]

@lladam

Actually I am looking for a function that can alarm or send message on a scheduled date and time in a month long or more, is there one?

yes, see here

[PAID] Alarm Manager Extension with Notification or Autostart

Description Alarm Manager Extension to send a notification or autostart the app at a given time or at boot time only once or repeated by interval (15 minutes, half hour, hour, half day, day and week, month and year). After clicking the notification your app will be started. You can define a start text, which will be passed to your app in method 'get plain start text' and trigger some action after your app is started. You also can define several alarms, just use a different id for each alarm. A…

protip: you always can do a search in the extensions directory here App Inventor Extensions | Pura Vida Apps

Taifun
PS: for new questions, please start a new thread... this thread is about "Bad arguments"