How o replace a Text Node in a xml file with tinyXml

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I have a problem like this:
I want modify the name element int the xml file below from “jack” to “joff”, but have not found an available member function in tinyXml. I use “InsertEndChild()” or “LinkEndChild()”, which only show me the connected string like “jackjoff”.

<member id=1>
<name>jack</name>
</member>

however, this is the code segment which can achieve my modification.

	TiXmlText * text = new TiXmlText("joff");
	TiXmlNode * oldNode = nameElement->FirstChild();
	nameElement->RemoveVhild(oldNode);
	nameElement ->LinkEndChild(text)