Sampling from a random pulse train using pulstran

I am trying to generate and sample from a random pulse train with amplitude A that is uniformly distributed over (0,1); that has a width of 0.5 seconds and a period of one seconds. I am trying to write a routine that will generate 100 discrete samples of the random pulse train and plot two of the sequences. The sampling rate of the pulse train is 10hz. I have attempted a solution but keep getting this error:

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

Error in random_pulse_a3 (line 13)

X(i,1:100) = pulstran(t,d,@rectpuls,w);

I have tried fixing this error myself and am not understanding what is wrong. Any help explaining what ive done wrong would be appreciated and how to fix it. Thank you

function X = random_pulse_a;
fs=10;
t=[0:1/fs:5];
w = 0.5;
A = rand(100, 1);
for i = 1:100
    
    B(1:1, 1:6) = A(i,1);
   d=[0.2:1:5.2;B]';
  
  
   
    X(i,1:100) = pulstran(t,d,@rectpuls,w);            %error occurs here 
end

x = random_pulse_a;
plot (x(1,1:100))
hold on
plot (x(2,1:100))