public void setIdentity(String id) {
		
		// Walkaround para las identidades del etoken.
		String new_ident = null;
		char[] c = { '\0' };
		String endtag = new String(c);
		if (id.endsWith(endtag)) {
			new_ident = new String(id.substring(0, id.length() - 1) + "\\"
					+ "0");
		} else {
			new_ident = id;
		}

		try {
			Node n = this.documentRoot.getElementsByTagName(
					"IDENTIDAD_PRINCIPAL").item(0);
			try {
				n.getFirstChild().setNodeValue(new_ident);
			} catch (Exception e) {
				// no hay datos, hay que crear el nodo de datos
				n.appendChild(documentRoot.createTextNode(id));
			}

			AlmacenIdentidades.getInstance().reloadConfiguration();
		} catch (Exception e) {
			logger
					.severe("Error trying to set the tag IDENTIDAD_PRINCIPAL in the config file: "
							+ e.getMessage());
			JOptionPane
					.showMessageDialog(
							null,
							"Error trying to set the tag IDENTIDAD_PRINCIPAL in the config file",
							"FATAL ERROR", JOptionPane.ERROR_MESSAGE);
			System.exit(-1);
		}
	}