I'm new to web transactions and would like to test a workflow that involves clicking a button that starts a polling process. The polling requests elicit a 204 (no content) response until the data has been processed, at which point the server returns 200 and some data. I would like the transaction to fail if the polling does not get a http response of 200 within an allocated amount of time (say 45 seconds). So far, I've recorded this interaction with the 24x7 transaction recorder, but I'm not sure how to specify the pass/fail criteria. Any pointers appreciated.