Break A Wall: Implementing Comments, Accelerometer Movements, LifeManagement, and Pause - Learn GameSalad for iOS: Game Development for iPhone, iPad, and HTML5 - page 114

Figure 4-29. Game Over display rule
You need to modify the Ball Spawning rule attached to the Racket actor in order
to add a condition on the number of lives (>0).
Open the Racket actor in the Actor Editor. Select the Ball Spawning rule and
add the following condition: ''Attribute''''game.lives''''>''''0'' as per Figure 4-30.