LivePusherStyles 美颜开启太白了，美白调1-5没变化，是什么原因呢？

代码如下：

var pusher = null;
var view = null;
var on_off = 0;
var stepSwitch = 5;
// H5 plus事件处理
function plusReady(){
// 创建直播推流控件
pusher = new plus.video.LivePusher('live',{
url:'rtmp://testlivesdk.v0.upaiyun.com/live/upyunb',
mode:'SD',
beauty:on_off,
whiteness:stepSwitch

            });  
             preview();  
             createView();  
        }  
        document.addEventListener('plusready', plusReady, false);  
        // 创建原生View控件  
        function createView(){  
            view = new plus.nativeObj.View('test',{top:'0px',left:'0px',height:'100%',width:'100%'});  
            view.drawInput(  
                {top:'20%',left:'20%',width:'65%',height:'45px'},  
                {fontSize:'16px',placeholder:'请输入直播标题.....',borderColor:'#ffffff',borderRadius:'15px'},  
                'input');  
            var meiyan = '<img src="img/live/meiyan.png" width="30px" height="30px"></img>';  
            // 绘制文本  
            view.drawRichText(meiyan, {top:'2%',right:'21%',width:'30px',height:'wrap_content'},  
            {onClick:function(e){  
                if(on_off==0){  
                    on_off = 1;  
                    plus.nativeUI.toast( "美颜开启");  
                }else{  
                    on_off=0;  
                    plus.nativeUI.toast( "美颜关闭");  
                }  
                plusReady();  
            }});  

            var qiehuan = '<img src="img/live/qihuan.png" width="30px" height="30px"></img>';  
            // 绘制文本  
            view.drawRichText(qiehuan, {top:'2%',right:'11%',width:'30px',height:'wrap_content'},  
            {onClick:function(e){  
                switchCamera();  
            }});  

            var closes = '<img src="img/live/close.png" width="30px" height="30px"></img>';  
            // 绘制文本  
            view.drawRichText(closes, {top:'2%',right:'1%',width:'30px',height:'wrap_content'},  
            {onClick:function(e){  
                stopPreview();  
            }});  

            var bnt = '<img src="img/live/bnt.png" width="70%" height="45px"></img>';  
            view.drawRichText(bnt, {top:'80%',left:'15%',width:'100%',height:'wrap_content'},  
            {onClick:function(e){  
                pusher.start();  
                alert("开始推流");  
            }});  
            view.show();  

        }