Decrease Tracker Value
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Increase Tracker Value
Set Tracker Target Value
Set Tracker Value
iOS 14 +
Sets the target value of the specified tracker
updateNumberTrackerTarget(tracker: <#Object (Tracker)#>, targetValue: <#Double#>)
updateNumberTrackerTarget(tracker: Tracker(identifier: "abcde-f", displayString: "Hello World"), targetValue: 42)