I'm trying to conduct a fmri experiment using a device as a response system (Resonance Technology-EvokeInterface) that has an specific software in which I can assign a number to each key (5, one for each finger). On the other hand, I use e-prime as the visual stimulation system and I need these two programs (e-prime and Resonance Technology-EvokeInterface) to interact. However, eprime do not understand the previous assignation of number/keys programmed in Resonance Technology-EvokeInterface. As a consequence of it, eprime always provides the response '1' regardless of which key is pressed. Any idea as to a potential solution?