Unable to produce a figure. Just comes up blank

I'm trying to plot some recordings from some .wcp files. Here is the code I'm trying to use. The code for the the first experiment is working and giving me a figure, but the code for the second experiment just gives me a blank figure with nothing on it. Why is that?

Update**

I managed to getthe figures working, but now I can't seem to define a window to identify the first fEPSP. I've attached the m.file for the code I'm using.

% function to plot recordings
% plot trace of first experiment
smoothfactor = 11;
grey = [0.5,0.5,0.5];
nCh = out(1).channel_no;

figure

for n = 1:nCh
    h(n) = subplot(nCh,1,n);
   
    plot(h(n),t,out(1).S{n},'Color',grey);
   
    h(n).XLabel.String = 'time (ms)';
   
    h(n).YLabel.String = out(1).channel_info{n}.unit;
   
    h(n).FontSize = 12;
    hold(h(n),'on');
   
end

% plot trace of second experiment
smoothfactor = 11;
grey = [0.5,0.5,0.5];
nCh = out(2).channel_no;

figure

for n = 2:nCh
    h(n) = subplot(nCh,2,n);
    
    plot(h(n),t,out(2).S{n},'Color',grey);
    
    h(n).XLabel.String = 'time (ms)';
    
    h(n).YLabel.String = out(2).channel_info{n}.unit;
    
    h(n).FontSize = 12
    hold(h(n),'on');
end

[Mathieu NOE]

hello

maybe if you attach a data file we can better help you