RE: Define formula response not working?

Any help on a 'Correction' script would be appreciated. Trying to implement something like in aiml, where I say 'wrong' or 'correction' and type in the correct response. So far the code I have is below. I'm trying to retrieve the current response and output to dialog. Then I was going to grapple with the 'set' operator to somehow define the correct response. Would that work?

So far, I have the syntax working to get the last input (copied) from the Loop script, but I have "test" returning for all the 'last #' items of the conversation. Also, I am trying to set the topic as per the Introduction to Self .. post using 'set #topic on :conversation to "topic1"' but it throws compile error about the 'on' part of that statement and errors in chat debug log without the 'on :conversation'. I'm not sure which relationship returned by the All operator is the response, or what other relationships to probe with it. 'assign :all1 to (all #response from :targetlast)' would seem most obvious, but throws chat debug errors.