Error in optimization process

I am trying to fit a gumbel distribution on a series of data. So I want to minimize the negative of maximum likelihood by optimizing two variables var(1) and var(2). This is my code:

X=xlsread('file.xlsx');
options = optimset('MaxFunEvals',1000,'FinDiffType','central');
options=optimset(options,'Display','iter','MaxIter',1000,'TolCon',1e-6);
lb=0;
ub=Inf;
var=zeros(2,1);
x = fmincon(@(var)Gumbel(var,X),1,1,[],[],[],[],lb,ub,[],options);

and my Gumbel function is:

function f=Gumbel(var, X)
  f=-sum(log((1./var(1)).*exp(-(X-var(2))./var(1)-exp(-(X-var(2))./var(1)))))

Can someone help me why I am getting errors?! Thanks

[Shashank Prasanna]

What are you errors? Can you post it here?

[Fred]

Error using fmincon (line 294)

Row dimension of A is inconsistent with length of b.

Error in LL (line 10)

x = fmincon(@(var)Gumbel(var,X),1,1,[],[],[],[],lb,ub,[],options);

Answer 1

[Matt J]

Your input arguments are out of sequence. Also, you have too many of them. fmincon can only accept 10 inputs and you've passed in 11.