Passing Parameters by Value or by Reference
package{ import flash.display.Sprite; public class Main extends Sprite{ public function Main(){ var myVariable:Number = 5; var myVariablePlusOne:Number = incrementByOne(myVariable); trace(myVariable); trace(myVariablePlusOne); } function incrementByOne(nValue:Number):Number{ nValue++; return nValue; } } } // 5 // 6