For the V4 HTTP Proxy API, the runtime logs are not visible. We have enabled log settings under API Traffic, but we still can't find any logs for the V4 API in the Runtime Log section.
We also tried to access API properties using EL in Policies, but these are not accessible in the V4 API.
Issue 1: API runtime logs in V4 will be available soon. I will get back on an ETA by next week.
Issue 2: I'll check on this and get back.
Issue 3: Do you want to view the API request/response payload? You can configure the logging here (see screenshot), and then select "Payload" in the next screen.
In V4, I just tried accessing an API property named "keyname", using the EL "{#api.properties['keyname']}", and it's working fine. Can you try again or share what you've previously tried, so that we can look into it?