Genetic Algorithm Multiple Input Args

Okay so say I have the below code. I have a setup code that defines variables that are needed in the main function that is called by the genetic algorithm tool. And this is the method I found to pass these variables in but I continually get errors. Any help would be greatly appreciated. Thanks!

setup.m
B = 15;
D = 100;  
%(more complicated in practice but just an example)

main.m  
function z = main(A,B,D)
z = A*B*D
end

solver.m
setup
[x,fval] = ga(@(A) main(A,B,D),1,[],[],[],[],0,1)