var ywCombox = util.dictionary.SimpleDicFactory.createDic(dic);
          ywCombox.on('select', function(combo, record, index) {
                var mzlbDataStore = new Ext.data.JsonStore({
                     fields : [ 'value', 'text' ],
                     data : []
                });
                chs.script.rmi.jsonRequest({
                     serviceId : "chs.simpleQuery",
                     method : "execute",
                     pageSize : 100,
                     schema : "chs.application.ebgl.schemas.EB_JCXM",
                     cnd:['eq',['$','a.K_XMLB'],['s',this.ywCombox.getValue()]]
                }, function(code, msg, json) {
                     debugger
                     var mzlbAllObj = json.body;
                     var mzlbData = [];
                     for ( var i = 0; i < mzlbAllObj.length; i++) {
                          var mzlbObj = {
                               value:mzlbAllObj[i].K_JCXM,
                               text:mzlbAllObj[i].P_XMMC
                          };
                          mzlbData.push(mzlbObj);
                     }
                     this.xms.store.loadData(mzlbData, false);
                }, this);
          }, this);
          this.ywCombox = ywCombox;
          var xmLabel = new Ext.form.Label({
                html : "&nbsp;&nbsp;項目："
          });
          
        var xms = new Ext.form.ComboBox({
            editable:false,
                width:100,
                name : 'LX',
                store :  new Ext.data.JsonStore({
                     fields : [ 'value', 'text' ],
                     data : []
                }),
                valueField : "value",
                displayField : "text",
                mode : 'local',
                triggerAction : 'all',
                emptyText : "",
                selectOnFocus : true,
                forceSelection : true     
        });
        this.xms = xms;

希望能對大家有所幫助，有問題可以在下方評論，我會一一回復。