I understand that you are trying to reference a Simscape model within a ‘for’ iterator subsystem and to do this the simscape model needs to be discrete.
The Model Discretizer is a tool in Simulink that can be used to discretize continuous-time models. The Model Discretizer can be used to convert a continuous-time model to a discrete-time model, or to create a variant subsystem that contains both continuous-time and discrete-time blocks.
Refer to this documentation for more information: https://www.mathworks.com/help/simulink/ug/model-discretizer.html
