Http connector input and output parameters

Hi to connect to an External Rest API, I am using http connector.

I have attached my sample bpmn diagram.sample.bpmn (3.5 KB)

Task 1 is a service task. I have filled the below details in the properties tab of http-connector.

WEB SERVICE CALL - URL

Name - url
Type - Text
Value -http://localhost:5000

I have written a REST API in python in my local and it will return a Hello string, not a Json format.

Name - method
Type - Text
Value - POST

Name - headers
Type - Map
Value - content-type application/json

I dont know what to be done for the output parameters or to proceed further.