Hi, how can I insert the coordinates in utm zone on the axes?

Hi, how can I insert the coordinates in utm zone on the axes?

type 12 ° E 43 ° N

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clear all; clc;

%% parte dedicata a lettura dati
ncfile='T32TQM_20150704_20181230_S2_L3A_10m_TSM_CTWORCC_clip.nc'; 
ncinfo(ncfile); 
ncdisp(ncfile);
x=ncread(ncfile,'x'); 
y=ncread(ncfile,'y'); 
time= ncread(ncfile,'time');
date_matlab = datetime(time, 'convertfrom','posixtime'); 
for t=286
  startLoc = [1 1 t];
  count  = [Inf Inf 1];
  d = ncread(ncfile,'TSM',startLoc,count);
  d=d';
  clf
  mymap=pcolor(x,y,d);
  mymap.EdgeAlpha=0
  hold on  
  load coast
  plot(long,lat+0.1,'black')
  set(gca,'ColorScale','log')
  caxis([1 100])
  sr=colorbar
  sr.Label.String = 'g/m^3';
  xlabel('m')
  ylabel('m')
  caption = sprintf('%s','tsm [g/m3]' , date_matlab(t),'[UTC]',' V MAX_ ', vmax(t), ' v med_ ', vmed);
  caption1 = sprintf('%s', date_matlab(t));
  title(caption, 'FontSize', 10, 'FontWeight', 'bold', 'Color', 'b');
  print(['TSM_01s'  datestr(date_matlab(t),'ddmmyyyy') '.png'],'-dpng');
  %print(['imm_satellit_01S ' num2str(time(t)) '.png'],'-dpng');
end