Sets whether the JavaScript function that opens the popup window should add data
from the form fields to the request. The form name is used in the JavaScript
function of onClick to identify the form object correctly. The JavaScript
will only be set up to pass the names and values for the form fields on the
request if the form name is set.
Parameters: formName - the name attribute of the form to pass field data from.This must be the real/generated form name and not thenetui:form tagId attribute.