How to use GetNext block in the Fetch URL block

I have an object that contains arrays and I want to access each array after the other. Each array has a text which I want to send out using “send message” and send the other, after the previous one has been answered by customer. Object may have different number of arrays so this has to be dynamic.

Can “GetNext” block within “Fetch URL” block assist in this regard or should I be using something different? If yes, what can I use?

Thank you in advance.

This exactly what it should be able to do. is there any issue with the approach ?