how to write the fitness function correctly?

function f =myfunc(t) r1 = @(v) v(1,:); r2 =@(v) v(2,:); f(:,1) =@(t) r1(sim(net,t')); f(:,2) =@(t) r2(1./sim(net,t')); end

after writing this i am trying to access it using the code

ObjFcn =@myfunc; and then i give some lower and upper bounds and next i use

[X,FVAL] =gamultiobj(objFcn,nvars,[],[],[],[],LB,UB)

but my programm stops at the start saying that "non scalar array of function handles are not allowed ,use cell arrays insted"

some one please tell me how to write that objective function (fittness function file).