<Field>
<Display class=’Button’>
<Property name=’label’ value=’Recalculate’/>
<Property name=’command’ value=’Recalculate’/>
</Display>
</Field>
To ensure that the system recalculates the value of a field, set action to true in the Display class element as shown below:
<Display class=’Select’ action=’true’>
Add this value only to fields that the user selects or clicks on. Do not add it to test or text area fields. When a field has action=true set, the form recalculates this form whenever the field is modified in the browser.