pxt-ev3/docs/reference/control/on-event.md

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# @extends
# Example #example
Register two events coming from source `22`. Make the brick status light up when
the events of `0` and `1` are _raised_.
```blocks
const statusLighter = 22;
control.runInParallel(() => {
for (let i = 0; i < 2; i++) {
pause(1000);
control.raiseEvent(statusLighter, i);
}
})
control.onEvent(statusLighter, 0, () => {
brick.setStatusLight(StatusLight.OrangePulse)
})
control.onEvent(statusLighter, 1, () => {
brick.setStatusLight(StatusLight.GreenPulse)
})
```