InfoPath Dev

I need the ability to save filled out forms locally to people's laptops/tablets while out in the field (offline), then submit the forms when they are back in the office (attached to the network). In my InfoPath 2013 I created the form and added a "Save" button to the form. I added the following code to that Save ...

I don't understand why this seems like such rocket science. I've spent 2 days on the internet researching and testing many and various ways to do this, but am no further ahead. I created an Infopath 2013 form and set up the data connections and list library back into SharePoint. All is working as expected. The intent of this form ...