Hello @Poley
You have to go to Default parameter behavior to Tunable

Additional settings that you can make can be to change the solver to "auto" you can decrease the sample time, which is now 0.1 to 0.001 to see some results on the led and to check the "Automatically handle rate transition for data transfer".

In addition, I've added a PWM signal to the Green LED.
Hope this helps,
Marius