How do I have to create a scalar function with multiple equations for "particleswarm" function

Hello!

I'm using 'particleswarm' for optimization of parameters in matlab and I'm getting error on returning objective function to scalar. Could someone please help me with this. Thank you in advance!

My function is:

function F = SimFnc2(X,t,Wx_r,Wy_r,Wz_r)

%Initial values

dt=1/32;

g=9.8065;

t=1:2003; %number of points

%Importing data from STAT

STAT=importdata('STAT.txt');

nx= STAT(:,10);

ny= STAT(:,11);

nz= STAT(:,12);

Wx_d= STAT(:,7);

Wx_r=deg2rad(Wx_d);

Wy_d= STAT(:,8);

Wy_r=deg2rad(Wy_d);

Wz_d= STAT(:,9);

Wz_r=deg2rad(Wz_d);

Theda_iz=STAT(:,13);

Gamma_iz=STAT(:,14);

Erx=X(1);

Ery=X(2);

Erz=X(3);

Theda=(((Wy_r+Ery).*sin(Gamma_iz))+((Wz_r+Erz).*cos(Gamma_iz)));

Gamma=((Wx_r+Erx)-(tan (Theda_iz).*((Wy_r+Ery).*cos(Gamma_iz)-(Wz_r+Erz).*sin(Gamma_iz))));

F=[Theda;Gamma];

end

And I'm getting the following error report:

Error using particleswarm>makeState (line 703)

Objective function must return scalar values.

Error in particleswarm>pswcore (line 169)

state = makeState(nvars,lbMatrix,ubMatrix,objFcn,options);

Error in particleswarm (line 151)

[x,fval,exitFlag,output] = pswcore(objFcn,nvars,lbRow,ubRow,output,options);

Error in Sol_SimFnc (line 15)

[x,fval]=particleswarm(@SimFnc2,nVar)