constraint violation in GA toolbox

my code is supposed to calculate the max fundmental with a mass constraint but also having a minimum fundumental freq of 15 hz.

my variables are 0s and 1s the code runs normally however its plotting penalty vs generations instead of best fitness , when i searched i found that this is due to constraint violation. I dont know how to fix this

please note that @Fund_freq is my objective fnc

my nonlinear constraint function:

function [C,C_eq] = myConstraints(q)
c=32
N=sum(q);
Initial_Data
F=Fund_freq(q,N,c,h);
C=[F-15];
C_eq=[];
end

my linear const fnc

function [A,b] = mass_const(c,nvars)
Initial_Data;
A(1,c)=2*LX*LY*rhom;%(Multiplied by 2 for double mass)
A(1,c+1:nvars)=2*LX*LY*rhoG;
b=1.941;
end

[Matt J]

Please demonstrate the problem.

[alaa zarif]

the problem is i need a maximum fundumental freq of a plate

the variables are referriing to thickness of the plate

this plate mass shouldnt exceed 1.941 kg and the fund freq cant be lower than 15 hz

is it clearer now?

[alaa zarif]

the plate is assumed to be made of several layers of equal thickness and the code assumes their absence or existence by 0s and 1s