how to simulate a model inside an embedded matlab function block with code have a for loop ?

the block "ERROR LOOP" has a 15 i/p arguments which some are i/p to the block "OFF DESIGN MODULE" which all are sub of ('EngineModel1') i wrote the code for the embedded matlab function in ERROR LOOP block as shown with no syntax errors but when run simulation give an 2 error: as attached.

<<

if true
function yout=ERRORLOOP (VB,V7,V6,V5,V4,V3,V2,V1,E1,E7,E2,E3,E4,E5,E6)
for VB=(0.7:0.02:1.1)
  TOLL =0.003;
  DELTA=0.005;
  ER=[E1;E2;E3;E4;E5;E6;E7];
  V=[V1;V2;V3;V4;V5;V6;V7];
  ERB=ones(7,1);
  DV=ones(7,1);
  for z=1:7;
      if abs(ER(z)) > TOLL;
          for w=1:7;
          ERB(w)=ER(w);
          DV(w)=DELTA*V(w);
          end
              for j=1:7;
                  V(j)=V(j)+DV(j);
                  sim('EngineModel1');
                  EMAT=ones(7,7);
                  AMAT=ones(7,1);
                      for i= 1:7;
                      EMAT(i,j)=(ER(i)-ERB(i)/DV(j));
                      AMAT(i)=-ERB(i);
                      end
                  V(j)=V(j)-DV(j);
              end
          DV(j)=AMAT(i)/(EMAT(i,j));
          V(j)=V(j)+DV(j)*0.25;
          sim('EngineModel1');
      else
      end
  end
end
yout=[V VB];  end
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note: in code i have to simulate the model 'EngineModel1' inside the for loop "j" 7 times and one time after the if condition finished "z"(i.e 8 times each if condition).