Error Not enough input arguments when using nonlcon for Fmincon command

I have just studied Matlab so i am so sorry if this problem is 'stupid'. I am stuck on dealing error 'Error Not enough input arguments' when i use nonlcon for Fmincon command. Here is my code:

%THE ROBUST RELIABILITY DESIGN METHOD
% Input data: mean value & standard deviation

    mD0=1200;     stdD0=6;
    mD1=1000;     stdD1=5;
    mF=1.3*10^6;  stdF=1.2*10^5;
    mr=135;       stdr=5.265;
  % variable h
  syms h 
  % mean value of limit state equation
    mg = mr - 3*mF*(mD0-mD1)/(pi*mD1*h^(2))

% variance of limit state equation
  varg = stdr^(2) + (3*(mD0-mD1)*stdF/(pi*mD1*h^(2)))^(2) +...
      (3*mF*stdD0/(pi*mD1*h^(2)))^(2) + (3*mF*mD0*stdD1/(pi*mD1^(2)*h^(2)))^(2)

% Standard deviation of limit state equation
  stdg=sqrt(varg)
  vpa(stdg)
  A1=1/stdg;
  B=6*mF*(mD0-mD1)/(pi*mD1*h^3);
  beta=mg/stdg;
  f2 = matlabFunction(A1*B*(exp(-beta^2/2))/(2*pi)^(1/2));

%Using fmincon command to solve The Robust Reliability Design
  A=-1; b=-50;
  h0=50;
  lb = [];
  ub = [];
  Aeq = [];
  beq = [];
  nonlcon=@constrain;
  fmin = fmincon(f2,h0,A,b,Aeq,beq,lb,ub,nonlcon)

Here is constrain function:

%Constrain function
function [c, ceq] = constrain(h,mD0,stdD0,mD1,stdD1,mF,stdF,mr,stdr)
mg = mr - 3*mF*(mD0-mD1)/(pi*mD1*h^(2));
stdg= sqrt(stdr^(2) + (3*(mD0-mD1)*stdF/(pi*mD1*h^(2)))^(2) +...
(3*mF*stdD0/(pi*mD1*h^(2)))^(2) + (3*mF*mD0*stdD1/(pi*mD1^(2)*h^(2)))^(2));
c = (0.00336*stdg-mg);
ceq = [];

Please help me to solve this problem. Thanks all so much!

[Matt J]

Incidentally, inequality constraints like

   A=-1; b=-50;

are not a good way to express upper and lower bounds. You should express this as

    lb=50;

Answer 1

[Matt J]

Define nonlcon as an Anonymous Function

    nonlcon=@(h) constrain(h,mD0,stdD0,mD1,stdD1,mF,stdF,mr,stdr);

so that MATLAB knows that it is a function of h with Extra Parameters mD0,stdD0,mD1,stdD1,mF,stdF,mr, and stdr.

[Skies1228]

Thank you so much for quickly reply. It already worked.^^