Change file name in loop

For some reason only one file dump_0 is being created. Does this mean Matlab is not going through the for loop?

 for t=0:dt:4*dt %99 for 100 graphs
      figure;
       for ind=1:1920
           U=(3*ind+linspace(1,3,3)-3);
           Phi= PHI_disp_RBME_ModePlot_N(U);
           r=xlocs_full(ind);
           omega=(f_disp_RBME(iMode,kPtMode)*2*pi);
           k=kappa_space(kPtMode);
           spatialphase=k*r;
           timephase=omega*t;
           displ=Phi*exp(i*((spatialphase)-(timephase)));
           xOvito(ind)=xOvito(ind)+magFact*displ(1);
           yOvito(ind)=yOvito(ind)+magFact*displ(2);
           zOvito(ind)=zOvito(ind)+magFact*displ(3);
           header1= 'id';
           header2= 'type';
           header3='x';
           header4='y';
           header5='z';
           k=0;
           fileName='Dump_';
           fid=fopen([fileName,num2str(k)],'w');
           fprintf(fid, [ header1 ' ' header2 ' ' header3 ' ' header4 ' ' header5 '\n']);
           fprintf(fid, '%f %f %f \n', [xOvito yOvito zOvito]');
           fclose(fid);
           k=k+1;
...
end

Answer 1

[Walter Roberson]

You have

           k=0;

inside the loop, so you are resetting the name each time.

[Krish Desai]

I put it outside all the loops, at the top, I still only got one file: dump_0.040673