如何在dwr的回调函数中传递多个参数

<script src='/wh/dwr/interface/RjlbHelper.js'></script>

<script>
function show(v_lbid,v_obj){
RjlbHelper.getSubRjlbsByFlb(v_lbid,{ //java方法
callback:function(dataFromServer) {
update(dataFromServer, v_obj);
}
}
);

}
function update(v_rjlbs,v_obj){ //回调函数

alert（v_rjlbs);

alert(v_obj);
}
</script>