Accessing URL Redirection property in Code

I have a page which is configured in Kentico.I have a html of this Page. This html contains one href @https://www.ingrammicro.ch/ebs/?action=Redirect@program=HPTC@company=##COMPANY##@branch=##BRANCH##@customer=##RESELLER_ID##@uid=##USER_GUID##@sid=##SID_HASH##@.This href value is mentioned in the URL Redirection property of that page. Page-@Properties-@Navigation-@URL RedirectionI want to replace this href value with the new href. How do i do this in Kentico code? OR How do i access this property programatically so that i can replace its value with new one?