system shd allow the user to create an instance for an user object and destroy da instance whenever da user required and nt req.
eg.
in a window user can add button lk add, modify, del, exit etc.... if dey want to add button del and modiy only den system shd allow to add buttons del and modiy. after sme time dey dnt want the button del and dey want to add "Add" button den the system shd allow to remove the "del" button and add the "Add" button.
for this req i create on UO uo_botton and write uO function for different functionality. whenever user wants to add den system create instance for uo_button and working fine.
if the user wants to remove the button den we need to destroy the instance na.. but i dnt knw hw to destroy a particular instance. because i didnt give any name for an instance. First i want to know how to name the instance.
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