How to generate a analog output signal each time a pushbutton is pressed from a GUI with the usage of an Ni-USB 6001 DAQ?

I'm trying to generate a pulse signal to trigger a external stimulator for an experiment. I want to use a pushbutton to generate that signal wherever I want to output the trigger signal. I'm using a session-based code to acquire input signal and to output the trigger. I based my code with this example : https://www.mathworks.com/help/daq/examples/software-analog-triggered-data-capture.html. The problem I have is to configure the callback listener for the 'DataRequired' event. The listener in question is 'triglistener' and is define here :

trigListener = addlistener(s, 'DataRequired', @(src,event) triggerOutputUI(src, event, capture, hGui));

The callback function code is write down bellow. It consists of getting the value of two pushbuttons ('ManualButtonCortex' and 'ManualButtonMuscle') from the hGui figure. When a pushbutton is pressed, I want to output the Data with the call src.queueOutpuData on the analog output ai0 or ai1.

function triggerOutputUI(src, event, capture, hGui)

% Get capture toggle button value (1 or 0) from UI
ManualActiveRequestCortex = get(hGui.ManualButtonCortex, 'value');
ManualActiveRequestMuscle = get(hGui.ManualButtonMuscle, 'value');

if ManualActiveRequestCortex
     set(hGui.StatusText, 'String', 'Cortex Trigger to AM Systems'); % To indicate the status in the GUI window
     src.queueOutputData(outputData0);
elseif ManualActiveRequestMuscle
     set(hGui.StatusText, 'String', 'Muscle Trigger to AM Systems'); % To indicate the status in the GUI window
     src.queueOutputData(outputData1);
end   
end

Should I create a new class for a events or is it possible to do it with the DataRequired Event?