MATLAB For Loop/coding question, any help greatly appreciated!

Hi all! I've attached my code below. Basically I'm trying to write a MATLAB script which hep analyze large sets of fMRI scans. Each patient has 1 structural MRI scan, and 1-2 functional MRI scan (the 'f'MRI part). The script here is intended to find the scans and start processing them. I've written this for just 2 patients (1=1:2) but it will eventually be for > 1000. The problem I'm having is allowing it to accept that some patients have 1 functional scan and others have 2 (either is okay). My current script only works if they have 2....Any help would be greatly appreciated! The part I'm specifically referring to is:

filename = sprintf('/media/nir/SharedDrive/Ben/BATCHtester1/Sub014%d_Ses1/Sub014%d_Ses1_Scan_0%d_BOLD%d.nii', i, i, j + 1, j)

Thanks! (see below for full code)

Ben

clear BATCH;

BATCH.filename= '/media/nir/SharedDrive/Ben/BATCHtester1/conn_2.mat';

BATCH.Setup.isnew=1;

BATCH.Setup.nsubjects=2;

for i = 1:2

for j = 1:2

filename = sprintf('/media/nir/SharedDrive/Ben/BATCHtester1/Sub014%d_Ses1/Sub014%d_Ses1_Scan_0%d_BOLD%d.nii', i, i, j + 1, j)

BATCH.Setup.functionals{i}{j}= filename;

clear filename;

end

end

for i = 1:2

filename = sprintf('/media/nir/SharedDrive/Ben/BATCHtester1/Sub014%d_Ses1/Sub014%d_Ses1_Scan_01_ANAT1.nii', i, i)

BATCH.Setup.structurals{i}= filename;

clear filename;

end

BATCH.Setup.preprocessing.steps={'default_mni'};

BATCH.Setup.preprocessing.fwhm=8;

BATCH.Setup.preprocessing.voxelsize_func=2;

BATCH.Setup.preprocessing.sliceorder=[1:2:47,2:2:47];

BATCH.Setup.RT=3.0;

BATCH.Setup.analyses=[1,2];

BATCH.Setup.voxelmask=1;

BATCH.Setup.voxelresolution=1;

BATCH.Setup.outputfiles=[0,1,0];

BATCH.Setup.roi.names={'LeftVentralStriatum','RightVentralStriatum', 'LeftDorsalPutamen', 'RightDorsalPutamen', 'LeftMedialDorsalThalamus', 'RightMedialDorsalThalamus', 'LeftVentralPutamen', 'RightVentralPutamen', 'LeftDorsalStriatum', 'RightDorsalStriatum'};

conn_batch(BATCH);