public void setCustomFields(String customFields) {
   try {
     formatter.setCustomFields(parseCustomFields(customFields));
   } catch (JsonParseException e) {
     addError("Failed to parse custom fields [" + customFields + "]", e);
   } catch (JsonProcessingException e) {
     addError("Failed to parse custom fields [" + customFields + "]", e);
   } catch (IOException e) {
     addError("Failed to parse custom fields [" + customFields + "]", e);
   }
 }