Change currency format while using Ej Grid JQuery plugin in ASP.Net

Summary is displaying with dollar symbol While Grouping in ej grid using Syncfusion .I have used the following javascript .

$("#<%=FlatGrid.ClientID%>").ejGrid({
    dataSource: window.gridData,
    allowPaging: true,
    allowGrouping: true,
    allowSorting: true,
    showSummary: true,
    summaryRows: [{
                    title: "Total",
                    summaryColumns: 
                                [{
                                    summaryType: ej.Grid.SummaryType.Sum, displayColumn: "OrderValue", dataMember: "OrderValue", format: "{0:C2}"
                                }],
                    showTotalSummary: false
                    }]
});