Global sensitivity analysis

Hi everyone, I am new to global sensitivity analysis and learning it through online course. I find a helpful video of GSA conducted by professor Marco Ratto. He post a problem set in his video, I really want to learn it but I don’t have any answer to refer to. Does anyone have that problem set and its answer and share it with me? Thank you so much. To be specific, I want to learn how to set a combination of parameters to ensure stability through this video.

The problem set should be at
https://git.dynare.org/Dynare/dynare/-/wikis/uploads/64decd3b8bf1ecd0f1c32f16e1600d6f/Problem_set.zip
and the solution at https://git.dynare.org/Dynare/dynare/-/wikis/uploads/dc113cb84d4496389ddfd7b4a75ea153/Solution_problem_set_sensitivity.zip