I was trying to import the random library however the Modelica.Math.Random library does not exist in my library and I cant load the linear system library to get the random package. So I decided to copy the random package from the textbook and import the package directly, when I simulate the test model with imported random package, an error msg occurred:

Process crashed

assert            | assert  | ERROR: Too many event iterations. System is inconsistent. Simulation terminate.

How do I solve this problem? any idea how to use the random library as well?