Context data for post request response not available in Event Forwarding

Hi, 

i'm trying a really basic use case with event forwarding.

I created a rule that make a post request to a mocked be system (i defined a response body when the post happens and i can see it if i read logs with the adobe debugger). 

However i cannot seem to grab this response in a data element. 

this is the rule: 

and this is my data element: 

Any suggestion on how to capture the response (is it possible, for example, to store this response in a variable or doing something on the front end?).

i really appreciate any help. Thanks!