Setting the default values in RangeSlider

I am looking for a way to set the initial, default values to the RangeSlider, which should correspond to the slider handles being set at those positions when the GUI is initialized.

For instance, I set the range of the slider from 0 to 100, but would like to set the default values on the sliders to be 20 and 80. Now the handles at the start are positioned at the min and max values of the slider.

I looked through the documentation for the RangeSlider module, but could not find any option to do so (like in the way it is done in the slider module: self.slider.set(20)).

Here is the example code:

from RangeSlider.RangeSlider import RangeSliderH

from tkinter import *
import tkinter as tk

root = tk.Tk()
root.geometry("750x200")

hVar1 = DoubleVar()  # left handle variable
hVar2 = DoubleVar()  # right handle variable

rs1 = RangeSliderH(root, [hVar1, hVar2], Width=400, Height=65, min_val=0, max_val=100, padX=17, show_value= True)
rs1.pack()

root.mainloop()

I tried passing some values to variables hVar1 and hVar2 by using hVar1 = tk.DoubleVar(value=20) but had no luck.