<mvc:View xmlns="sap.m" xmlns:mvc="sap.ui.core.mvc" controllerName="sap.ui.demo.walkthrough.controller.InvoiceList">
    <List id="invoiceList" headerText="{i18n>invoiceListTitle}" class
 
="sapUiResponsiveMargin" width="auto" 
        items="{
            path : 'invoice>/Invoices',
            sorter : {
                path : 'ShipperName',
                group : true
            }
        }">
      <headerToolbar>
         <Toolbar>
            <Title text="{i18n>invoiceListTitle}"
 
/>
            <ToolbarSpacer/>
            <SearchField width="50%" search=".onFilterInvoices"/>
         </Toolbar>
      </headerToolbar>
        <items>
            <ObjectListItem title="{invoice>Quantity} x {invoice>ProductName}"
                number="{parts: [ {path: 'invoice>ExTendedPrice
 
'}, {path: 'view>/currency'} ], type: 'sap.ui.model.type.Currency', formatOptions: { showMeasure: false } }"
                numberUnit="{view>/currency}" numberState="{= ${invoice>ExtendedPrice} > 10 ? 'Error' : 'Success' }">
                <firstStatus>
                    <ObjectStatus text="{ path: 'invoice>Status', formatter: '.formatter.statusText'}"/>
                </firstStatus>
            </ObjectListItem>
        </items>
    </List>
</mvc:View>

修改後儲存， 執行 mockServer.html檔案，發現金額沒有顯示

同時按下 ctrl+shift+alt+S 開啟 UI5 Diagnostics， 檢視Control Tree中，對應元素的資訊， 可以看到number的path屬性ExTendedPrice (invalid)