When sending a web request, if the server responds with content-type header different from  application/json, the JSON parser won't consider it as a JSON object, hence dot notation won't work.

E.g:
This will return empty for webResponse.body.name

vs:
This will work:

Workaround

1. Change the server's header content-type to application/json
2. Use regex to get the data from webResponse.body