The PARFOR loop cannot run due to the way variable 'm' is used

Matlab shows "The PARFOR loop cannot run due to the way varialbe 'm' is used".

Please, how to parallelize both of the loops.

m=1;
for iClss = 1:nuClasses
    for iTry = 1:nuTrials
        fCreateFiless(cTrials{iTry,iClss}', iClss, parentFolder, m, samFreq);
        m=m+1;
    end
end

Answer 1

[Matt J]

parfor m=1:nuClasses*nuTrials
    
    [iTry,iClss]=ind2sub(size(cTrials),m);
    
    fCreateFiless(cTrials{iTry,iClss}', iClss, parentFolder, m, samFreq);
    
end

[Ali Al-Saegh]

Thanks a lot!