<oListBox>:setData(<nPosition>, <expValue>) --> self

        <nPosition> is a numeric value that indicates the position of the
        item within the list whose data is being replaced.

        <expValue> is the data that is being associated with the item
        specified by <nPosition>.

        setData() is a method of the ListBox class that is used for changing
        the data that is associated with a list item.