Sending response triggers through LSL to mobile EEG

I followed this post to push triggers from the keyboard responses using Psychopy with mBT Smarting Pro, but I think that the timing doesn’t correspond to a subject’s reaction time. A subject always responds to a stimulus within 1 second after seeing it, but the reaction time in the EEG structure is about 1.75 seconds, which is the trial length. Is there suggestion regarding where I should push the keyboard response. Here is the code that I use to push the triggers in the Each Frame.

if response.keys != None: # we had a response
# Send LSL Marker : Response as string
mystring = ''.join(map(str,response.keys))
resp = "ResponseKey: " + mystring
print("Response: [%s]" % resp)    
outlet.push_sample([resp])  # Push event marker.

The issue has been resolved and it was due to different designs between the tasks.
A trial will end as soon as a subject click the key from the mBT post’s Stroop task. However, a trial of our task will not force end as soon as a subject click the key, so LSL response markers will be pushed from a different part.

 if TrialResp.status == STARTED and not waitOnFlip:
                theseKeys = TrialResp.getKeys(keyList=['space'], ignoreKeys=["escape"], waitRelease=False)
                _TrialResp_allKeys.extend(theseKeys)
                if len(_TrialResp_allKeys):
                    TrialResp.keys = _TrialResp_allKeys[-1].name  # just the last key pressed
                    TrialResp.rt = _TrialResp_allKeys[-1].rt
                    TrialResp.duration = _TrialResp_allKeys[-1].duration
                ##### LSL push ######
                for thisKey in theseKeys:
                    if thisKey == 'q':  # it is equivalent to the string 'q'
                         core.quit()
                    else:
                         # Send LSL Marker : Response as string
                         mystr = ''.join(map(str,TrialResp.keys))
                         resp = "ResponseKey: " + mystr
                         outlet.push_sample([resp])  # Push event marker.
                ##### LSL push ######
                    # was this correct?
                    if (TrialResp.keys == str(CorrAns)) or (TrialResp.keys == CorrAns):
                        TrialResp.corr = 1
                    else:
                        TrialResp.corr = 0