private void proDiffHmParameters() {
		diffHmParameters = new HashMap<String, String>();
		Iterator<String> iterator = currentHmParameters.keySet().iterator();
		while (iterator.hasNext()) {
			String param = (String) iterator.next();
			String value = currentHmParameters.get(param);
			if (previousHmParameters.containsKey(param)) {
				if (!previousHmParameters.get(param).equals(value)) {
					diffHmParameters.put(param, "mod");
				}
			} else {
				diffHmParameters.put(param, "add");
			}
		}
		iterator = previousHmParameters.keySet().iterator();
		while (iterator.hasNext()) {
			String param = (String) iterator.next();
			if (!previousHmParameters.containsKey(param)) {
				diffHmParameters.put(param, "del");
			}
		}
	}