function for compiling images doesn't work

I try to compile images by using this function but the function is not recalled. what is the problem in this code.

if true
  % Pathname="/Users/mohammedabdullah/OneDrive - University at Albany - SUNY/Signals/Signals/April 24 2018_2";
FolderNames= "Cycle 1";
hybs= 8;
Channelstotal= 8;
channelsperhyb= 2;
function offsets = make3channel(PathName, FolderName, hybs, channelstotal, channelsperhyb) 
for i = 1:hybs
  listing{i} = dir([PathName '\' num2str(i) '\*.tif']);
end
mkdir(PathName,FolderName);
fld = pwd;
Miji;
cd(fld);
k2 = strfind(listing{1}(1).name, 'Pos');    
for k = 1:length(listing{1})
  roi = listing{1}(k).name(k2(1):k2(1)+4);
  mkdir([PathName '\' FolderName],roi);
  for i = 0:(hybs/(channelstotal/channelsperhyb))-1
      counter = 1;
      for j = (i*channelstotal/channelsperhyb)+1:channelstotal/channelsperhyb*(i+1)
          Path = ['path=[' PathName '\' num2str(j) '\' listing{j}(k).name ']'];
          MIJ.run('Open...', Path);
          hybtemp = uint16(MIJ.getCurrentImage);
          if mod(j,channelstotal/channelsperhyb) ~=1
              regi = cat(3,regi,hybtemp(:,:,4));
              c = normxcorr2(regi(:,:,counter),regi(:,:,1));
              [~, imax] = max(abs(c(:)));
              [ypeak, xpeak] = ind2sub(size(c),imax(1));
              offset{i+1,counter} = [(xpeak-size(regi(:,:,1),2)) (ypeak-size(regi(:,:,1),1))];
              hybtempreg = imtranslate(hybtemp,offset{i+1,counter});
              tform = imregcorr(regi(200:800,200:800,counter),regi(200:800,200:800,1));
              hybtempreg = imwarp(hybtemp,tform,'OutputView',imref2d(size(regi(:,:,1))));
              hyb = cat(3,hyb, hybtempreg(:,:,1:3));
              regireg = cat(3,regireg, hybtempreg(:,:,4));
              offsets{i+1,counter} = tform;
          else
              hyb = hybtemp(:,:,1:3);
              regireg = hybtemp(:,:,4);
              regi = hybtemp(:,:,4);
          end
          counter = counter + 1;
          MIJ.run('Close All')
      end
      MIJ.createImage('HYB',hyb,true);
      MIJ.run('Stack to Hyperstack...', ['order=xyczt(default) channels=' num2str(channelstotal) ' slices=1 frames=1 display=Grayscale']);
      MIJ.run('Save', ['save=[' PathName '\' result '\' roi '\' num2str(i+1) '.tif' ']']);
      MIJ.run('Close All')
      MIJ.createImage('Regireg',regireg,true);
      MIJ.run('Save', ['save=[' PathName '\' FolderName '\' roi '\hyb' num2str(i+1) 'RegistrationCheck.tif' ']']);
      MIJ.run('Close All')
  end
end   
MIJ.exit          
end
end