Series of Transfer Functions, same denominator, Simulink

Hello,

I have a question concerning the Transfer Function Block in Simulink.

I have a transfer function like the following:

1/(t*s+1)^j

My problem is that j is an optimization parameter and I can not write the entire polynomial expression.

Even if I could, j could be a very huge number as well.

I tries writing the denominator with the power function in Simulink, but it does not accept it.

How would you do it?

Any help is highly appreciated.

Best regards.