flex+fms，出错Error #2095: flash.net.NetConnection 无法调用回调 XXX函数。

如题，求正解？ //我在flex里定义了xxx函数 Fms_Service._netConnection=new NetConnection(); Fms_Service._netConnection.addEventListener(NetStatusEvent.NET_STATUS，netStatusHandler); Fms_Service._netConnection.addEventListener(AsyncError... 如题，求正解？

//我在flex里定义了xxx函数
Fms_Service._netConnection=new NetConnection();
Fms_Service._netConnection.addEventListener(NetStatusEvent.NET_STATUS，netStatusHandler);
Fms_Service._netConnection.addEventListener(AsyncErrorEvent.ASYNC_ERROR，netAsyncError);
Fms_Service._netConnection.connect(Fms_Service._appServer);
Fms_Service._netConnection.client=this;
private function netStatusHandler(e:NetStatusEvent):void
{
trace(e.info.code);
if (e.info.code=="NetConnection.Connect.Success")
{
Fms_Service._responder=new Responder(communicateStateHandler);
Fms_Service._netConnection.call("communicateServer"，Fms_Service._responder，so.data.user[0]);
}
else
{
Alert.show("fms连接失败!"+e.info.code);
}
}
public function XXX(userList:Array):void
{
}
//在fms服务器脚本中
application.broadcastMsg("XXX"，userList);

出错Error #2095: flash.net.NetConnection 无法调用回调 XXX函数。