How to use damp() on an idtf object?

y=load('./Messergebnisse/yz.mat').y;

u=load('./Messergebnisse/yz.mat').u;

data = iddata(y, u);

model = tfest(data, 2);

damp(model)

The above code worked before the update I made yesterday. Now the line damp(model) gives me this error:

Error using damp

The "damp" command cannot be used for models of class "idtf".

But the description for 2021b still says:

sys - Linear dynamic system, specified as a SISO, or MIMO dynamic system model. Dynamic systems that you can use include:

• Continuous-time or discrete-time numeric LTI models, such as tf (Control System Toolbox),

Unfortunately I don't have acces to the old setup anymore. Please, what am I missing here?

Answer 1

[Thomas Marcus]

Ah, I needed to install the Control System Toolbox.

Had forgotten to install that in the new setup, and the error I got didn't help much to figure that out. Anyway. Found the solution.