getters and setters

public class Database {

    private var _test:Number = 666

    public function get test():Number {
        return _test
    }

    public function set test(n:Number):void{
        _test = n
    }
}

public class Main {

    public Main() {
        var databse:Database = new Database()
        trace(databse.test)
        databse.test = 1
        trace(databse.test)
    }
}