quest drop_bar begin
    state start begin
        when kill with !npc.is_pc() begin
            local prc = number(1, 10)
            if prc == 1 then
                pc.give_item2(ID1, 1)
            elseif prc == 2 then
                pc.give_item2(ID2, 1)
            elseif prc == 3 then
                pc.give_item2(ID3, 1)
            end
        end
    end
end