Problem passing text variable from JSON response

Hi, I state that until yesterday everything worked perfectly and that I didn’t change anything.

From this morning it is no longer possible to pass a text value from the JSON response to a variable.

If the answer is numerical everything works perfectly eg:

{
“answer”: 0
}

Mapping the response response.answer on a variable everything works perfectly.

If, however, the answer is textual eg:

{
“answer”: “hello”
}

In my variable the result is NULL

All this from this morning.

Thanks for your help
Marco