UNNotificationContentMBS.attachmentCount as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The attachment count.

(Read only property)

UNNotificationContentMBS.badge as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The number to display as the app’s icon badge.

When the number in this property is 0, the system does not display a badge. When the number is greater than 0, the system displays the badge with the specified number. When the value in this property is not set, the system leaves the current badge unchanged.
(Read only property)

UNNotificationContentMBS.body as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The message displayed in the notification alert.

The body text contains the final text that you want to display. If your app is not authorized to display alert-based notifications, this property is ignored.
If you specified two percent symbols (%%) in the message body, the system replaces it with a single percent symbol (%). The system strips all other printf style escape characters from your string prior to display.
(Read only property)

UNNotificationContentMBS.categoryIdentifier as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The identifier of the app-defined category object.

Use notification types to distinguish between the different types of notifications your app supports. You use this support primarily to create actionable notifications—that is, notifications with custom action buttons—and to redirect your notifications through either your notification service app extension or your notification content app extension.
For remote notifications, this property is set to the value of the category key in the aps dictionary.
(Read only property)

UNNotificationContentMBS.Handle as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The internal object reference.

(Read and Write property)

UNNotificationContentMBS.sound as UNNotificationSoundMBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The sound to play when the notification is delivered.

Notifications can play a default sound or a custom sound. For information on how to specify custom sounds for your notifications, see UNNotificationSoundMBS.
(Read only property)

UNNotificationContentMBS.subtitle as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

A secondary description of the reason for the alert.

Subtitles offer additional context in cases where the title alone is not clear. Subtitles are not displayed in all cases. If your app is not authorized to display alert-based notifications, this property is ignored.
(Read only property)

UNNotificationContentMBS.summaryArgument as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The string the notification adds to the category’s summary format string.

(Read only property)

UNNotificationContentMBS.summaryArgumentCount as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The number of items the notification adds to the category’s summary format string.

(Read only property)

UNNotificationContentMBS.threadIdentifier as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

An identifier that you use to group related notifications together.

For remote notifications, this property is set to the value of the thread-id key in the aps dictionary.
(Read only property)

UNNotificationContentMBS.title as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

A short description of the reason for the alert.

When a title is present, the system attempts to display a notification alert. If your app is not authorized to display alert-based notifications, this property is ignored.
Title strings should be short, usually only a couple of words describing the reason for the notification. In watchOS, the title string is displayed as part of the short look notification interface, which has limited space.
(Read only property)

UNNotificationContentMBS.userInfo as Dictionary

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	User Notifications	MBS MacFrameworks Plugin	19.1	✅ Yes	❌ No	❌ No	✅ Yes	All

A dictionary of custom information associated with the notification.

For remote notifications, this property contains the entire notification payload. For local notifications, you configure the property directly before scheduling the notification.
The keys in this dictionary must be property-list types—that is, they must be types that can be serialized into the property-list format.
(Read only property)