RobotStudio event

Digital Inputs in Simulation

Hi, 

I have the newest RobotStudio version 2023.2. 
I am trying to implement a move down motion until the TCP touches a sensor. 
The sensor will be connected to Controller via Digital I/O. 
Could you please tell me how to configure the I/O in simulation the the required RAPID Snippet? Thanks!

Best Regards, 
Shuang