[Question] Matematical operation on value in Slider controls

[LukasSliacky]

Question

I have specific problem and i don't understand how to solve it :/

Value label works fine, but in my project I need to apply mathematical operation (dividing) on this value.

Value label="{value}%" is probably string, but when I try to transform it to int, debugger show me error ValueError: invalid literal for int() with base 10

Please, how can I divide value and after that show is as label?

Code sample

import flet as ft

def main(page):

    def slider_changed(e):
        t.value = f"Slider changed to {e.control.value}"
        page.update()

    t = ft.Text()
    page.add(
        ft.Text("Slider with 'on_change' event:"),
        ft.Slider(min=0, max=100, divisions=10, label="{value}%", on_change=slider_changed), t)

ft.app(main)
```ValueError: invalid literal for int() with base 10`


### Error message

ValueError: invalid literal for int() with base 10

### ------------------------------------------------------

- [X] I have searched for answers to my question both in the issues and in previous discussions.

[LukasSliacky]

On StackOverflow was question answered.

`import flet as ft
def main(page):
def slider_changed(e):
#Store value to perform mathematical opreations on first
slider_value = e.control.value
# then divide slider value by an integer
result = slider_value / 10
#update both text and slider conntrol with result
t.value = f"Slider value divided by 10 = {result}"
my_slider.label = f"{result}%"
page.update()

t = ft.Text()
my_slider = ft.Slider(min=0, max=100, divisions=10, label="{value}%", 
on_change=slider_changed)

page.add(
    ft.Text("Slider with 'on_change' event:"),
    my_slider, t)
#print(my_slider.label)

ft.app(main)`