Hey noel, thank you, it works perfectly. However, i have the following problem : i can't modify my cookie-value ... my blog starts with (define start request) ( my-home-page request)) next, (define (my-home-page request) (define foo (make-cookie "id" "my-content") (set! foo (set-cookie "id" "another content") ;; so now the content of the cookie has changed ... `(html (body (p ,(print-cookie foo)) (a (href 'a-link to (a-post request))" "link") )))) ;;;;; (define (a-post request) (set! foo (set-cookie "id" "master content")) ;; here, why can't modify my cookie value ? ... ))) (serve/servlet start) I don't understand : i start my blog wich calls (my-home-page), and this one creates a cookie. But in (a-post request) i can't i modify my cookie, because foo is an unknown word ... How can i retrieve the content of my cookie in my (a-post ...) function ? thanks for your help, -mw