anchor.diff:  		String linkHidden = request.getParameter("cdeBrowserTree:_link_hidden_");
   		String navCmd = request.getParameter("cdeBrowserTree:org.apache.myfaces.tree.NAV_COMMAND");
   		String submit = request.getParameter("cdeBrowserTree_SUBMIT");
  +		String treeParams = request.getParameter("treeParams");
   		
   		if (autoScroll != null && !AUTOSCROLL_PATTERN.matcher(autoScroll).matches()) {
       		valid = false;
  
positive.code: 	private static final Pattern NAVCMD_PATTERN = Pattern.compile("[0-9]*[:]?[0-9]*");
  	private static final Pattern INT_PATTERN = Pattern.compile("[0-9]*");
  	private static final Pattern LINK_HIDDEN_PATTERN = Pattern.compile("[cdeBrowserTree:]*([[0-9]*[:]]*t2g|_idJsp3)");
  	
  	private void filterHiddenVariables(HttpServletRequest request, HttpServletResponse response) throws java.io.IOException{
  		boolean valid = true;
  
negative.code: 			valid = false;
  		}
  		if (submit != null && valid && !INT_PATTERN.matcher(submit).matches()) {
  			valid = false;
  		}
  		if (treeParams != null && valid && !TREE_PARAMS_PATTERN.matcher(treeParams).matches()) {
  			valid = false;
  		}
  		
  