Cloud function server response

Question 1:
I am trying to get values of various keys from a decoded map that was encoded to string.
when I tried:

final decoded = json.decode(response.response);
myMap = decoded;
if (kDebugMode) {
          print(decoded["S"][0]);
}

I kept getting the value of S but an index zero, even as 0 is also a key of another map on server

............

Question 2
Am unable to get more than one responses from the cloud function, only the last one is gotten as response, despite others are directly above it.
I tried this:

   res.json({
          'MTN_CG_Values': mtnCGValues.toString(),
        });

   res.json({
          'MTN_CG_Model': mtnCGModel.toString(),
        });

what is mtnCGValues and mtnCGModel?

They are map
@Steven

Though question 1 is resolved, remaining that of question 2

I discovered, in question 1 the map was converted to string via

.toString

Thanks for coming through

What's left is the second question

Would you pleas share what response.response is or exactly what mtnCGValues and mtnCGModel values are?

Okay

so why are you doing decoded["S"]? It doesn't look like there is any "S" key