Index in position 2 exceeds array bounds. Index must not exceed 972288.

I got an error for the following code but doesn't know how to fix the issue, could someone help me?

Error code:

Index in position 2 exceeds array bounds. Index must not exceed 972800.

Error in split_bdfs_oms_pt2 (line 66)

EEG{n,sub} = BDFs{1,sub}.data(:,wind);

bdf_dir = 'C:\';
save_dir = 'E:\';
waittime = 60.2; 
s = {'AH_C_11'}; 
BDFs = cell(1,length(s));
for sub = 1:length(s)
    filename = [bdf_dir 'ah_oms_' s{sub} '.bdf']; 
    
    BDFs{sub} = pop_biosig(filename,'importannot','off');  
    BDFs{sub} = pop_select(BDFs{sub},'channel', 1:130); 
end

fs = BDFs{1,1}.srate;
ntrials = 30; 
EEG = cell(ntrials,size(BDFs,2)); 
twait = 0.5*fs; 
for sub = 1:numel(s)
    etype = squeeze(struct2cell(BDFs{1,sub}.event))'; %
    etype = cell2mat(etype);    
    
    trial_trig = find(etype(:,1) ~= 1024); 
    
    ex_trig = find(etype(:,1) == 1050 | etype(:,1) == 1051 | etype(:,1) == 3072); 
    trial_trig(ismember(trial_trig,ex_trig)) = []; 
    for n = 1:length(trial_trig)
        t1 = trial_trig(n); 
        lat1 = BDFs{1,sub}.event(t1).latency + twait; 
        ttime = ceil(waittime*fs); 
        wind = lat1:lat1+ttime-1; 
        
        EEG{n,sub} = BDFs{1,sub}.data(:,wind); 
        clear wind
        
        clear t1 lat1
    end
    
    clear etype trial_trig ex_trig
end
for sub = 1:numel(s)
    disp(['Saving subject ' s{sub}]);
    
    if ~exist([save_dir s{sub} '\'], 'dir')
        mkdir([save_dir s{sub} '\'])
    end
    
    for trial = 1:ntrials
        disp(['Trial ' int2str(trial)])
        eegData = double(EEG{trial,sub});
        save([save_dir s{sub} '\' s{sub} '_' int2str(trial) '.mat'],'eegData','fs');
        clear eegData 
    end
end

[Walter Roberson]

        ttime = ceil(waittime*fs); 
 

I would worry that the ceil() could lead to positions beyond the end of the data.