Please use the following format for the title of this thread (then simply delete/replace this text with the content for the thread):
Title: Apple Game Frameworks and Technologies: 50 + and 60 * (???) (page 143)
Is this intentional? lowerLimit adds 50, but upper limit multiples by 60??
let randomModifier=SKRange(lowerLimit:50+CGFloat(level),
upperLimit:60*CGFloat(level))