Drop Down with all values excluding initial variable screen filter

Hello,

Design Studio version: 1.2 Patch 1.

Right now my application has three cross tabs, a graph and a drop down box to select Material .

Initial variable screen/prompt screen has Material Filter (optional) and Company Code (Mandatory),  my requirement is to enter at least one Material in the initial variable screen. But in the application, drop down should show all the Material list of values . When i select a Material from drop down list, application should refresh and display values for the selected Material.

Is there a way to achieve the above? I am lost at Drop down box on select.

Your help would be appreciated!

On Start up:

DROPDOWN_1.setItems(DS_1.getMemberList("0MATERIAL", MemberPresentation.INTERNAL_KEY, MemberDisplay.TEXT, 10));

Drop Down box 'On Select':

DS_1.setFilter("0Material",DROPDOWN_1.setSelectedValue(value)); 

Thanks in advance,

DC