Multi Dash app save parameters in url

Hi all
I try example 12 here Examples of multi-page apps with Dash Pages
It work okie.
When I try save parameters in url with this code, it not work

Are there any ways to fix it.

Hello @phuonghao145,

I’m a little confused as to what you are trying to do?

You are just trying to put the query string into the url? Why dont you just append the query_string onto the end of the url directly instead of trying to use replace?