Jump over user response

Hi, 

I have a finger tapping task where I have slide waiting for subject response (1,2,3,4) in a specific order like 3124 so I used a list to terminate after 2 min and a ParcProc. I also have an inline script right after the slide to check the response to count them and check the order and take the next as a loop. My problem is that the time limit that I defined (2 min) could not be applied meaning that it just wait for subject response. I want to run the slide and ask for subject input for a limited time and not more than that despite of when the y respond of even if there is no response.