Sometimes it’s helpful to take the JSON output and put it into a JSON formatter to make it easier to see how things are nested.
In your case, the data is an object nested within an array. And that object has a property called lastData which is what contains the uv property. There’s a short primer on JSON data formats here.
So the key to access your uv value would be:
[0].lastData.uv
In other words, the final fully formatted variable name would look like:
$context.response.data[0].lastData.uv
All that being said, did I understand correctly that the weather data gets pushed from your Weather Station (and its service) to IFTTT? If it’s pushed to IFTTT, you could use that to push the data over to SharpTools so you don’t have to poll for it.
