private static HashMap<String, String> listTests(String dirPath, int level) {
		HashMap<String, String> listoffiles = new HashMap<String,String>();
		try{
			
		    File dir = new File(dirPath);
		    File[] firstLevelFiles = dir.listFiles();
		    if (firstLevelFiles != null && firstLevelFiles.length > 0) {
		        for (File aFile : firstLevelFiles) {
		            if (!aFile.isDirectory()) {
		                listoffiles.put(aFile.getName().toLowerCase().trim(), aFile.getAbsolutePath().toLowerCase().trim());
		            }
		        }
		    }
		}
		catch(Exception ex){
			System.out.println("Error at GetProgramFiles.listTests " + ex.getMessage());
			listoffiles = null;
		}
		return listoffiles;
	}