Fill form from URL

I want to be able to fill fields in my form in from a url so it would be something like this: http://creator.zoho.com/kooks/leaderboard/form/9/Victim_Name=whatever&Victim_ID=1234

However after much experiment I just can't seem to get it to work.

My form is located here: http://creator.zoho.com/kooks/leaderboard/form/9/

Thankyou in advance.