code: def _create_latent_variables(self):
          
  
          for parm in range(self.z_no):
              self.latent_variables.add_z('Scale ' + self.X_names[parm], fam.Flat(transform='exp'), fam.Normal(0, 3))
              self.latent_variables.z_list[parm].start = -5.0
          self.z_no = len(self.latent_variables.z_list)
docs: Creates model latent variables
  
          Returns
          ----------
          None (changes model attributes)