[Tkinter] Make my button text update?

[Skata100]

So i have an integer 'bankValue' that is increased by a function 'addToBank'.

The buttons text displays 'bankValue', and should update upon click, but doesn't.

from tkinter import *
import tkinter.messagebox as mb
import os

# the in-game bank value, your total 'currency'
bankValue = 0

# function that decides how much to add to bankValue
def addToBank(amount):
    global bankValue
    bankValue += amount

# "gameWindow" = tk interface
gameWindow = Tk()

# heightxwidth of interface
gameWindow.geometry("500x250")

# title on top bar
gameWindow.title("WTFIT v0.05")

# button click = bankValue + amount (amount can be changed)
button1 = Button(gameWindow, command=addToBank(1), text=bankValue, width = 10, height = 2, bg = 'cyan')

# placement of button
button1.place(x=100, y=25)

# shows whats happening
gameWindow.mainloop()

I want the button to increase the value of 'bankValue', and display it as well.
I don't need it to display on the button either, if I can have that number display anywhere that would be awesome.


Thank you!
- Skata100