LTI System Subsystem steady state block

I have created a idtf from some measured data, the results are good, but the I would like to use a different initial condition in the LTI-System.

I opend the LTI-block, disabled the library link and entered in the steady state block prefered initial condition, but when I started the simulation, the initial condition was back on 0.0.

Is there any option to get access to the initial condition?

The transfer function is created with tfest command

Thanks