How to pass variables to my WEBapp through the html provided after building the app?

The output after building the app is in Html file now i want to pass some variables from that html file to the app…can it possible if yes then how??

The techniques described here:

http://unity3d.com/support/documentation/Manual/Unity%20Web%20Player%20and%20browser%20communication.html

are probably what you are looking for.