getting fmincon error after a call

Hi,

What is wrong with this call to fmincon:

[temppop,tempval,exitflag,output] = fmincon(@myfun,pop(idx(i),:),[],[],[],[],XRmin(1,:),XRmax(1,:),@mycon,opts,varargin{:});

I am getting this error: Error using myfun Too many input arguments.

Where myfun is:

function f = myfun(x),
    [f, c, ceq] = mlbsuite(x, 38, 0, 'g16');
    f = - f; %