switch问题

public class Movie
{
public static String CHILDRENS = "2";
public static int REGULAR = 0;
public static int NEW_RELEASE = 1;
}public class Customer
{
         public void state()
         {
switch(getPriceCode())
{
case Movie.REGULAR:break;//为什么报错？应输入常数值？
case Movie.CHILDRENS:break;
case Movie.NEW_RELEASE:break;
}
          }
}C#不支持这样写法？