How to change data from php to config file

Hi,

I would like to know if it is possible to modify values saved in the default config file via the framework

The goal is to make a setup at the launch of the site for the first time.

I'm using CodeIgniter v4 and i saw that it's possible to change with the v3 with :

PHP Code:

$this->config->set_item('item_name', 'item_value'); 


But is there a way in the v4 ?

Thank you