If you need to send control values in a non-ISO format, you should add a hidden text control to your form. Add a business rule that sets the hidden text control to the date control value in the desired format. Then, use the template for the hidden text control in your integration.
The frevvo Add-on for Confluence is available as an add-on to either frevvo' Online service or In-house installations. You need to install it into Confluence before you can add forms and submissions pages to Confluence. You will also need to download and install frevvo for Confluence.
See frevvo ™ for Confluence documentation for help installing and using this plugin.
Moving Forms/Workflows that use Connectors