I've used Vadim's tutorial on save vs save and submit multiple times. You can find it here : https://community.nintex.com/external-link.jspa?url=http%3A%2F%2Fvadimtabakman.com%2Fnintex-forms-save-or-submit.aspx
It's simple to set up. I created a form/workflow about a month ago and needed to finish it. It's now stopped working. The returned value isn't updating the column. Anyone else experiencing this?