UI5 -如何根据另一个组合框将数据动态绑定到Select in Table？

<Table id="myTable">
    <columns>
        <Column>
            <Label text="Country"/>
        </Column>
        <Column>
            <Label text="City"/>
        </Column>
    </columns>
    <items>
        <ColumnListItem>
            <cells>
                <Select items="{/countries}" change="onCountryChange">
                    <items>
                        <core:Item key="{key}" text="{text}"/>
                    </items>
                </Select>
            </cells>
            <cells>
                <Text text="{city}"/>
            </cells>
        </ColumnListItem>
    </items>
</Table>

sap.ui.define([
    "sap/ui/core/mvc/Controller",
    "sap/ui/model/json/JSONModel"
], function(Controller, JSONModel) {
    "use strict";

    return Controller.extend("myController", {
        onInit: function() {
            var oData = {
                countries: [
                    {key: "1", text: "China"},
                    {key: "2", text: "USA"},
                    {key: "3", text: "Germany"}
                ]
            };

            var oModel = new JSONModel(oData);
            this.getView().setModel(oModel);
        },

        onCountryChange: function(oEvent) {
            var oSelectedItem = oEvent.getParameter("selectedItem");
            var oContext = oSelectedItem.getBindingContext();
            var sPath = oContext.getPath();

            var oTable = this.getView().byId("myTable");
            var oItem = oTable.getSelectedItem();
            var oBindingContext = oItem.getBindingContext();
            var sPropertyPath = oBindingContext.getPath();

            var oModel = this.getView().getModel();
            oModel.setProperty(sPropertyPath + "/city", oModel.getProperty(sPath + "/text"));
        }
    });
});