Optionmenu selections are not shown when a tkinter app is merged with another

Question

o1=OptionMenu(calc, conicvalue, 
                "                                                                          Circle                                                                         ", 
                "                                                                          Ellipse                                                                         ", 
                "                                                                          Parabola                                                                         ", 
                "                                                                          Hyperbola                                                                         ", 
                "                                                                        Straight Line                                                                         ")
    o1.place(x=10, y=350)
    o1.config(bg='#2a2d36', fg="#fff", activebackground='#2a2d36', activeforeground='#fff', width=87, borderwidth=0, border=0)
    o1["menu"].config(fg='#2a2d36', bg="#fff", activebackground='white', activeforeground='black')
    o1["menu"].add_command(label=conicvalue.get())
    conicvalue.set("Various Conic Sections")

This is what i've coded however not getting the choice displayed upon the optionmenu. How to fix the issue?

I tried to make an optionmenu which worked well when that was a single app however stop working since i merged the window with another tkinter window.