You can use dropdown list boxes to present the user with a list of options from which he or she may choose one. It is only possible to choose items from the list. Dropdown list boxes can trigger an eventselected when the user selects an entry.
You must already have created a dynamic document and added a form to it using theadd_form method.
Remember to include the special parametersender in the interface of the method. If you have more than one dropdown list box in the dynamic document, you will need sender to identify the one in which the user actually made a selection
The method returns an object reference to the list box, which you should assign to the reference variable you declared in step 1.