Since that form redirects to a file URL, you'll have to embed the Google Analytics event tracking tag within the form embed code.
While it's not possible to modify the embed code in the existing Form module, you can use a Custom HTML module instead. With access to the form's embed code, add the GA event within the onFormSubmit method, as outlined in this article.
Since that form redirects to a file URL, you'll have to embed the Google Analytics event tracking tag within the form embed code.
While it's not possible to modify the embed code in the existing Form module, you can use a Custom HTML module instead. With access to the form's embed code, add the GA event within the onFormSubmit method, as outlined in this article.