JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
If you are asking how to put the updated code to your machine back into your form, unfortunately, it is not possible to upload the form's source code back to JotForm due to security issues.
You will have to host it yourself in your web server.
If this doesn't answer your question, please explain further and/or add more details about it so we can assist you properly.