Populating an Alternative Date Picker Format for a Specific Item

If you need to create a Date Picker item, but the format you need does not appear in the Display As list, select Date Picker (use item format mask). This item type enables you to control the Date Picker format mask using the item-level format mask. When an application uses this type of date picker, the Application Express engine derives the date format from the Format Mask attribute on the Edit Page Item page.