Guys one question here related to task3 in tsc5. Just to verify if what I'm thinking it's correct, and in case I'm not how can I solve this issue.
One of the things that it's required in the task is to "update the contract code" when it's needed. Is it correct to assume the following?

;; update_code comes in the inbound message, the second argument of the message
;; set_code will update the contract code after a successful termination of the current run
set_code(update_code);
;; set_c3 will set the c3, which according to the doc
;; "Contains the current dictionary, essentially a hashmap containing
;; the code of all functions used in the program"
;; So after this call, I could access for example "migrate_one" that it's in the "update_code", right?
set_c3(update_code.begin_parse().bless());
;; will call "migrate_one" with the current code association in my old c3
;; in the new code. To avoid this, I've read the it's recommended to fix the
;; code associated to this method, in both contracts, the new one and the old one.
;; For example using method_id(1666), I've seen something like this in the elector contract
;; and in the dns resolver contract. I've put the links bellow.
cell new_storage = migrate_one(old_storage);

Now I think I'm missing something here, because, I have no way to fix "method_id(1666)" in the incoming code, the "update_code" I mean. On my tests when I don't fix this "method_id" to the "migrate_one" and "process_message" as well, I get exit code 11. Which according to the doc it's:

Most oftenly caused by trying to call get-method whose id wasn't found in the code

Links:
DNS contract and Elector contract