EasyUI Combobox 设置默认值

/** 
 *绑定运营商，设置默认值， 显示CMCC， 传值1 
 */  
$('#operatingId').combobox({   
    url:'data_url',  
    valueField:'id',  
    textField:'name',  
    mode:'remote',  
    onLoadSuccess : function() {  
        $("#operatingId").combobox("select", "CMCC");  
        $("#operatingId").combobox("setValue", 1);  
    }  
});