MATLAB probability question

I need to find the probability 3 GREEN balls came from box 1

I put "THIS SECTION" for the part where my code is. The actual calculated probability is 64.4% and my code gets 21.5ish %. Anyone know what I am doing wrong?

I put: if results4(2) == 3 && box_choice > 0.5 % because that is "if 3 green balls and box 1" but I am not getting correct #

function [] = EE380Proj1B ()

% a) prob 2 red balls and 1 green ball

% b) if all 3 balls are green, prob that box 1 was chosen

% box 1

%R1 = 1;

%G1 = 3;

% box 2

%R2 = 5;

%G2 = 8;

%total = 13

counter = 0;

counter2 = 0;

processes = 100000;

for i = 1:processes

box_choice = rand;

results = [0 0];

choice1 = rand;

choice2 = rand;

choice3 = rand;

% [red, green]

if box_choice > 0.5

% box 1

%fprintf("box 1 chosen: ");

if choice1 > 0.75

results2 = results + [1 0];

else

results2 = results + [0 1];

end

if choice2 > 0.75

results3 = results2 + [1 0];

else

results3 = results2 + [0 1];

end

if choice3 > 0.75

results4 = results3 + [1 0];

else

results4 = results3 + [0 1];

end

else % box_choice

% box 2

%fprintf("box 2 chosen: ");

if choice1 > (8/13)

results2 = results + [1 0];

else

results2 = results + [0 1];

end

if choice2 > (8/13)

results3 = results2 + [1 0];

else

results3 = results2 + [0 1];

end

if choice3 > (8/13)

results4 = results3 + [1 0];

else

results4 = results3 + [0 1];

end

end % end if-else

% disp(results4)

% part a)

if results4(1) == 2

counter = counter + 1;

else

end

% ======================================================================= %

THIS SECTION

% ======================================================================= %

% part b)

if results4(2) == 3 && box_choice > 0.5

counter2 = counter2 + 1;

else

end

% ======================================================================= %

SECTION ABOVE

% ======================================================================= %

% use this to see if 3 green balls were chosen

end % end for loop

RandG = ((counter) ./ (processes)) * 100;

G3 = ((counter2) ./ (processes)) * 100;

fprintf("Probability of 2 Red Balls & 1 Green Ball = %d percent. ",RandG);

fprintf("Probability 3 greens came from box 1 = %d ",G3);

end % end function

function % a) prob 2 red balls and 1 green bau % b) if 3 balls are green, prob that box 1 was chosen %box 1 %box 2 %total13 counter - 0; counter2 - 0; processes - 1000000; for box_choice - rand; results[0 0] choice1 - rand; choice2 - rand; choice3 - rand; % [red, green] i - 1:processe:s box choice > 0.5 %box 1 ofprintf ("box 1 chosen:") 1 choice1 > 0.75 results2 -results[1 0] else results2-results[0 1]; end