Take this for instance.
When you go in a laser and it is on, you take damage. if you move out and back in again you take damage.
Take @Pika_Pokemon’s post for example:
is zis even related?
But if you move, you take damage! That is what the repeating lasers are for!
Have the trigger set to trigger on channel 'insert channel' and then when triggered, broadcast on channel 'insert channel' make sure the channels are the same, then set the trigger delay to 0.5. The trigger will trigger itself over and over, with intervals of 0.5