我们如何在Sharepoint 2013 Online中设置Business Connectivity Service(

我已经编写了代码，使用服务器端代码设置BCS在Sharepoint 2013中公开的外部数据。这是代码：

    public void SetBusinessDataValue(object spItem,object spField, string value)
    {
        try
        {
            SPBusinessDataField businessDataField = spField as SPBusinessDataField;
            SPListItem spListItem = spItem as SPListItem;
            businessDataField.ParseAndSetValue(spListItem, value);  //Set your value here
            string fieldName = ((SPField)spField).Title;
            spListItem[businessDataField.RelatedField] = spListItem.Fields[fieldName];
        }
        catch (Exception ex)
        {
            Logging.LogWriteLine("Error in method SetBusinessDataValue(). Failed to set the business data value", ex);
        }
    }

它运行良好。但是，我无法编写代码来使用SharePoint客户端对象模型在SharePoint 2013 Online中设置外部数据。有人能帮我解决问题吗？