Reset Save Data

My problem is when i have the reset option button in my settings(game) is when i try to click that, i need to close the whole game application and open it again so it can finally works. I want is i will not close the whole game application. And it will works or it will reset the whole save data in the actual game. So hows that? Sorry for the english. Asap. Thank you.

C# code:
PlayerPrefs.DeleteAll();

From What i understood from your question is that when you clean/Delete your Playerprefs you have to reload the game in order for Playerprefs to be Restarted/Deleted if that’s the case try reloading the level with a script.

This script is an example of cleaning/reloading the scene by using a ui button

public void Clean()
	{
		PlayerPrefs.DeleteAll ();   
		Application.LoadLevel ("SceneName");
	}