- Right-click on
01_light_switch.ysc and select
Run As → Statechart Simulation in the context menu.
- The simulation starts and shows the light switch model in its
off state. The rectangle named
Off is highlighted in yellow, meaning it is the active state.

- At the right side of the window, the simulation view is located. In this view, you can change variable values and raise events during a simulation run. Click on the small triangle left from
default to unfold the
operate link. This link represents the
operate event to switch the light on or off.

- Click on the
operate link. The active state changes accordingly from
Off to
On.

- Click on
operate again to switch off the light.