I am trying to save my post process settings but it is not working and I don't know why

I have a settings menu that directly does changes to the post process of the player and I’m trying to make a save system for that but I can’t seem to make it work. Here is an example of how I change the settings

I hope I provided everything needed to be able to get help from you guys and I hope someone will be able to help me because I’ve been stuck on saving the settings menu for the past days. Thank you very much!

I forgot to add this function and to mention that i am trying to check if the save system is working by using the buttons 1 and 2

so not sure what that was about but i deleted the .sav files in the project folder and it works now