Python if statement docx wount work

[Selfiatus1]

Here is the full code:

import tkinter as tk

from docx import Document

HEIGHT = 500
WIDTH = 600

root = tk.Tk()
root.title("Generator")
canvas = tk.Canvas(root, height=HEIGHT, width=WIDTH)
canvas.pack()

background_image = tk.PhotoImage(file='bg123.png')
background_label = tk.Label(root, image=background_image)
background_label.place(x=-6, y=-6)

#dropdown part
# Create a Tkinter variable
tkvar = tk.StringVar(root)
choices = { 'broker','consultant','recruit'}
tkvar.set('broker') # set the default option
popupMenu = tk.OptionMenu(root, tkvar, *choices)
popupMenu.place(x=260,y=95)

def helloCallBack():
 
   if tkvar == 'Broker':
      document = Document()
      document.add_heading("Broker")
      document.save('0034.docx')

button = tk.Button(text="Generate", font=40, command=helloCallBack)
button.place(x=230, y=380)

root.mainloop()