I have a box collision set up to toggle a light, everything works fine when i carry the actor to the box, but when i launch the actor with an impulse the event does not trigger at all, (i am working in blueprints if that matters) if anyone knows a solution or workaround that would be greatly appreciated!
Merry christmas 
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Showing what you have will go a longer way towards a helpful response than a basic explanation. No clue how you’re doing the detection.
Thanks for pointing that out, new to the forum and UE4 in general, are these illuminationg enough?
If the velocity is quite high, the period of time when the cube is within the Collision Box may actually fall between ticks. I suggest finding the Use CCD checkbox (both in the wall and in the launched cubes) and tick it. Thus the launched cube will (well, should) always stop upon hitting the wall and actually be within the Collision Box.
Unfortunately, the Continuous Collision Detection (CCD) only works with blocking, not overlapping, so if there’s something to block the projectile, like in your case, that’s fine; but if the Collision Box is on its own, that won’t probably work.
