Flex4使用RemoteObject时前台传递参数与服务器方法参数映射

没有映射会出现类似下面的错误：

The expected argument types are (....)
but the supplied types were (flex.messaging.io.amf.ASObject)
and converted to (null)

解决方法：前台传递的参数对象需要添加元数据申明

[Bindable]
[RemoteClass(alias="com.card.entity.Users")]
public class Users
{
public var id:int;
....
}