Ok thanks will have a look.
btw I also came up with a quick and dirty workaround for advancing the trial which was to have the page with the 3 radio buttons on it and for the last one set the allowable response to be e.g. ‘n’ and set the TERMINATE command as usual. Then after the pp has filled in the radiobutton questions they just push ‘n’ to advance to the next trial. Seems to be logging the radio button answers fine!