The dual question is: can we define in Silvaco a given value for the threshold voltage of a MOSFET? Vt is also an output data.
More general: can we force an output data to take a given value as an Input data?
For the moment, in Silvaco, we can define the ideality factor N, only in a combination with Spice code. But this is possible because in Spice, the ideality factor is an input data.