public boolean editCounterevidence(Evidence c) {
		Element evidenceE;
		Evidence evidence;
		boolean flag = false;
		for (Iterator i = root.elementIterator("counterevidence"); i.hasNext();) {
			evidenceE = (Element)i.next();
			if (evidenceE.element("id").getText().equals(c.getId())) {
				evidenceE.element("title").setText(c.getTitle());
				evidenceE.element("description").setText(c.getTitle());
				// Write to xml
				try {
					XmlUtils.write2Xml(fileName, document);
					return true;
				} catch (IOException ex) {
					// TODO Auto-generated catch block
					ex.printStackTrace();
				}
				flag = true;
				break;
			} 
		}
		return flag;
	}