There will be occasions when you may wish to bind submitted HTML fields to an XML fragment that is determined at runtime. This may be because you wish to preserve the data within the fragment and populate or overwrite certain fields only. Whereas the static binding approach discussed so far will create the binding fragment during application design, the dynamic approach creates the binding fragment from the runtime XML structure, together with the runtime data. This in effect helps you to preserve the page data between different server calls
In order to achieve this you need to be located within the Data Bindings tab. Select the Action Configuration tab on the left hand side and click on the action that you are trying to bind. The middle panel should now display the Action Configuration tab. Within this tab you can select the Keep previous form data option.
You can also use the Maintain Additional Link option to preserve as many data fragments as required between page invocations.
The Use base document structure? option uses the XML binding structure created and modified during page design to bind submitted action data). Please see the section on Data Binding within the FormMaker User Guide for more details.