Form embed parameters for translating: submit button, dropdown field values


I am working on embedding an English form onto an external Spain web site. The form needs to be in Spanish, but if at all possible, we want to use the same form rather than creating a clone. So, I am trying to use the locale/translation parameters as described in

So far, I’ve been able to successfully enable the appropriate locale for default error messages, and provide a list of translated field labels. There are two remaining translations that I cannot figure out how to dictate, based on the documentation:

  • The text of the Submit button
  • The values in dropdown fields

Is there a way to specify the translations for each of the above? Thanks very much.