code: @Override
      public ActionCommand execute(ActionMapping mapping, FormBean formBean, HttpServletRequest request, HttpServletResponse response) throws Exception {
  
          // Getting parameters for new tag
          String tagName = request.getParameter(PARAM_TAG_NAME);
          String attributeSource = request.getParameter(PARAM_ATTRIBUTE_SOURCE);
          String attributeName = request.getParameter(PARAM_ATTRIBUTE_NAME);
  
          CustomTag tag = new CustomTag();
          tag.setName(tagName);
          tag.setAttribute(attributeSource + '.' + attributeName);
  
          TaggingConfig taggingConfig = MoskitoConfigurationHolder.getConfiguration().getTaggingConfig();
          CustomTag[] tags = taggingConfig.getCustomTags();
  
          // Enlarging tags array
          int tagsArraySize = tags.length;
          tags = Arrays.copyOf(tags, tagsArraySize + 1);
          tags[tagsArraySize] = tag;
  
          taggingConfig.setCustomTags(tags);
  
          return mapping.redirect();
      }
docs: {@inheritDoc}