How to acess pop up menu in a separate function m file..

i have a fig file test.fig and its corrosponding m file test.m i made another function file test2.m by passing handles as an argument i am unable to access popupmenu values and strings in that test2(handles) function..

i have used

str = get(handles.tagname,'String');

i am able to use check box behaviour n radio button behaviour..