How to change paypal sandbox to Live in asp.net mvc 3

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C#

ASP.NET

MVC

Hi,

<appSettings>
   <add key="webpages:Version" value="2.0.0.0" />
   <add key="webpages:Enabled" value="false" />
   <add key="PreserveLoginUrl" value="true" />
   <add key="ClientValidationEnabled" value="true" />
   <add key="UnobtrusiveJavaScriptEnabled" value="true" />
   <add key="business" value="xxxxxxxxxxxxxxxxxxxxx@gmail.com" />
   <add key="IsSandbox" value="true" />
   <add key="currency_code" value="USD" />
   <add key="return" value="http://localhost/PayPal/RedirectFromPaypal" />
   <add key="cancel_return" value="http://localhost/PayPal/CancelFromPaypal" />
   <add key="notify_url" value="http://localhost/PayPal/NotifyFromPaypal" />
   <add key="test_url" value="https://www.sandbox.paypal.com/cgi-bin/webscr" />
   <add key="Prod_url" value="https://www.paypal.com/cgi-bin/webscr" />
 </appSettings>

This is my web.config coding for Paypal SandBox testing ,it is working properly and I already get API userName,API password,Signature from my paypal account and how will i change from sandbox to Live in asp.net MVC 3
Anybody tell me , i was spending lots time for this work...