@cluhmann @OriolAbril thank you both for your answers and advice! I was able to implement it.
I was not using the name of the variables only because I was defining multiple random variables under the same name. Here is an example of what I was doing
mu = pm.Normal('mu', mu = [0,1,2], sigma = [2,2,2])
I modified it and it really helped me! Now the code is much cleaner.