这应该有效:

Set newNode= XMLFile.CreateElement("price");
newNode.InnerText = "19.95"
trade.appendChild(newNode)

请注意，变量trade和newNode都应声明为IXMLDOMNode(在库msxml6.dll中定义的类型).

Please note that both variables trade and newNode should be declared as IXMLDOMNode (type defined in the library msxml6.dll).