Issues about parameter "Number of cells connected in series to make a battery" with model equivalent_circuit.Thevenin

[whblcy]

Hi， when I use the equivalent circuit model, setting the parameters of the cell numbers always does not take effect. Why is this? How do I modify it.
code as below:

`import pybamm
import numpy as np

model = pybamm.equivalent_circuit.Thevenin()
experiment = pybamm.Experiment(
[
"Discharge at 10W for 1.2 hours or until 3.5 V",
]
)

parameter_values = model.default_parameter_values

parameter_values.update({"Number of electrodes connected in parallel to make a cell": 2}, check_already_exists=False)
parameter_values.update({"Number of cells connected in series to make a battery": 16}, check_already_exists=False)

sim = pybamm.Simulation(model, experiment=experiment, parameter_values=parameter_values)
sim.solve()
options = [
"Current [A]",
"Battery voltage [V]",
"Terminal voltage [V]",
"Open circuit voltage [V]",
]
sim.plot(options)`

the result as below:

[whblcy]

if I just replace the modle as DFN， then the parameter work,