Another AdaCGI question

["Tim Gahnström" <md9tim@mdstud.chalmers.se>]

Hi
I am sorry to flood the group but I just found another question I can't
figure out myself.

I I run my program with this argument
test_CGIprogram?KEY=VALUE

put(key(1)) 
-will display KEY 

put(value(1)) 
-will display VALUE

I f I set a cooki with
Set_Cookie("CKEY", "CVALUE","","","");

put(cookie_value(1))
-will display CVALUE

But is there a function that will display the keyname of the first cookie?
I would like a function that looks similar to
cookie_key(1)

I need it because I am trying to creat a cookie base shoping cart where I
would like to store the items like this in the cookie

Item=amount
eg.
ball=5
hat=2

Thanks 
Tim