get submitted form on submit

So I have a form on a page, the same form is also called in a modal window. So I want to preform an action on_sent_ok. So in the Additional Settings tab I have on_sent_ok: ‘submittedFormAction();’ and in my scripts file I have:

function submittedFormAction() {
    // do something
}

But I only want it to happen to the form that was submitted, not the other form. So if I submit the one on the page, I don’t want that action to happen to the one in the modal. I feel like there has to be a way to send something unique from the form that was submitted, but I just can’t find anything.

Thanks!