Thanks for the kind feedback, thanulee, very nice of you.
I take the feedback, while I’m aware, that no one knows everything.
Typically the given options are excellent, but sometimes a proxy or dummy object will work better. However, I would think that the “on collision” would do the trick already.
For a more complex set up, XPresso can be helpful as “trigger”.
Anyway, you’re doing the right thing, exploring and testing the options. Keep in mind, there is no failure – only gained experience. This kind of experience will fill your “Creative Library” (as I call it); The more you load it, the more you will be able to do. So, enjoy the ride, and please ask if something is not clear and create!
Cheers.