Actually I call several data that contains a label and they are downloaded to me in JSON format and with a Web component I decode them, then I search for the information I need in pairs and this value “subscriptores” does not treat me as a list, if not as a text. What I can be doing wrong?
Yes, json format never be a list. Once you found such keys, set them to add items to the list block. So wherever such jeya are present in the JSON they all will be added to the variable as a list.