Return Functions and conditional execution in GA.

Hi, I am trying to change my code to work with ga. Formerly I had to create another function file that puts in all my variables in a loop. This was cumberomse and time consuming.

Unfortunatel I had to ask this question again but this time I have attached all the files. Hopefully it will help to understand

When using ga, the file works however it takes a very long time hence my doubts if fitness functions such as this is recommended.

Also the NaN might not be a good idea but I am not sure if the if condition below (full code is attached) can be depicted as a contraint. Any form of guidance will be appreciated.

Thank you

(Here below are bits of the function file)

function lcoe = taggered(X)
XC_GA = X;

X(1) = round(X(1));   
LW = sqrt(XC_GA(2));
LH = sqrt(XC_GA(2));
XC_GA(6) = XC_GA(6).* DM;             

...
HeliostatCost = (145.* HeliostatCount .* XC_GA(2)) ;
TowerCost =  3000000 .* exp(0.0113.* (XC_GA(3) - (XC_GA(5)./2) +((sqrt(XC_GA(2))./2))));
ReceiverCost =  103000000 * ((2.* pi* XC_GA(4) .* XC_GA(5))./1571).^0.7;

Total_Cost = ReceiverCost + TowerCost +  HeliostatCost;

if Power >= (PowerLimit-0.05) && Power <= (PowerLimit+0.05)
lcoe  = Total_Cost/Annual_power1 
else
lcoe = NaN;    
end
end