Failure Injection on a quadrotor in a SITL simulation on Simulink and JMAVSim and

Hi, I’m doing SITL simulations in simulink using Jmavsim from PX4-Autopilot. In particular, various parameters of the drone are acquired during the simulation, such as position, speed, etc. I’m looking for a way to inject faults into the drone during the simulation to compare the acquired parameters before and after the fault, but I can’t find the way.