Built-in variables for iOS containers
App ID: The value is set to the package name (Android) or bundle ID (iOS).
App Name: The value is set to the name of the application.
App Version Code: The value is set to the version of the application.
SDK Version: The value is set to the SDK version of the operating system in which the application is installed.
Advertiser ID: For iOS versions 6 and higher, the value is set to the identifier for advertising (IDFA). For older iOS version the value is set to an empty string.
Device Name: The value is set to the device name of the application (e.g. "iPhone 8").
Language: The value is set to the two letter language code that represents the language that the user has set for the device.
OS Version: The value is set to the version of the operating system in which the application is installed.
Platform: The value is set to the platform of the currently running application (e.g. "iOS").
Screen Resolution: The value is set to the screen resolution of the device of the currently running application. The format is "width x height", e.g. "1024x768".
Advertiser Tracking Enabled: For Android, this returns false if the user has opted out of interest-based ads, and returns true otherwise. SDK versions prior to v4 will always return false. For iOS versions 6 and greater, the value is set to the advertisingTrackingEnabled property. Otherwise, the value is set to true.
Container ID: provides the container's public ID (e.g. "GTM-XKCD42-9").
Container Version: provides the version number of the container, as a string.
Event Name: Returns the event name that caused the trigger to fire.
Random Number: generates a random integer between 0 and 2147483647.
Campaign Event Parameters
Campaign: Install/re-engagement campaign name.
Campaign aclid: Install/re-engagement campaign other click ID.
Campaign anid: Install/re-engagement campaign ad network ID.
Campaign click timestamp: Install/re-engagement campaign click timestamp.
Campaign content: Install/re-engagement campaign content.
Campaign cp1: Install/re-engagement campaign custom param 1.
Campaign gclid: Install/re-engagement campaign google click ID.
Campaign source: Install/re-engagement campaign source.
Campaign term: Install/re-engagement campaign search term.
In-App Purchase Event Parameters
In-app purchase price: Price of the in-app purchase.
In-app purchase product id: Product ID for the in-app purchase.
In-app purchase quantity: Quantity for the in-app purchase.
In-app purchase value: Value of the in-app purchase.
In-app purchase currency: Purchase currency, 3-letter ISO_4217 format.
Notification Event Parameters
Notification device time: Firebase Cloud Messaging (FCM) notification delivery relative to device time.
Notification message id: FCM notification message id.
Notification message name: FCM notification message name.
Notification message time: FCM notification message time (timestamp).
Notification message topic: FCM notification topic.
Other Event Parameters
Previous application version: Returns the previous application version.
Previous OS version: Returns the previous operating system version that the app is installed on.