How to use Paypal code I won here?

I won a 50$ paypal code from the free chest today. It's a 6 digit code. How can add it to my paypal account?
I don't see a way to enter it anywhere at paypal.

I figured it out.
It is an earnweb.com code.
First I can't use it on my earnweb account because you can only use 1 code/account.
I already used one such code. It was a code for 0.1 coin. That code appeared all the time on the site so I used it. So no more code of any kind can be used on my account.

So I created another one. I used the 50$ paypal code and suprise it can only be redeemed if I earn more then 118 coin at their site.

I don't see that happening so thanks for that...