How can I implement my edited source code?

I have an edited source code that I created to remove all other country options aside the United States. I contacted my website hosting service "BlueHost.com" to ask them where I would overwrite the existing source code file, and they directed me back to you, Jotform. Can you explain how I can do this?

Thank you!

Unfortunately, it is not possible to implement your custom code to JotForm, for example, if you have removed the options from a drop down, you will need to add your custom list in the options section in our Form Builder: 

You may also consider using one of our widgets, here are some links to one of them that will help you: 

https://widgets.jotform.com/widget/country_picker

https://widgets.jotform.com/widget/select_country

https://widgets.jotform.com/widget/all_states_and_cities

https://widgets.jotform.com/widget/find_a_country

This guide will help you to add the widget to your form: How-to-Add-a-Widget-to-your-Form

But if this does not help, please provide us more details about what you achieved with your source code, we should be able to implement this through our Form Builder or escalate it to our second level as a feature request. 

We will wait for your response.