LBP level creation questions

Well i have been trying at lbp planet, and even with some research im sturuggeling with these:

1. How do you make items respawn after they have been destroyed? Like say if a bomb blows up, how do you make it come back in the place they got the original bomb?

2. Is it possible to change the global settings using in game tools? Say if my character went into somewhere dark, could i change it so the game got darker?

That's all. any help would be very appreaciated, thanks for you time :)

I'm not sure on the second one but to make a bomb come back I think you could use one of those item spawn thingies that sort of look like an anus and set it to only let one on the level at a time, you'd have to check all the settings for that anus thing but I'm pretty sure that would do it.

Use the emitter tool to respawn objects

and there is a global lighting object that can change the lighting like you want

First. Emitter tool

Second, go to the store in-game and look for Creator Pack 1. It's free. When you finish downloading (really small file size because its just giving you rights to play it) go back to it in the in-game store and enter it. There are 5 levels that will give you new tools like the infinite-life spawn point, the tetherless jetpack, the GLOBAL LIGHTING SYSTEM (which is what you want)

Also check out the Metal Gear Solid pack. Fun stuff, only $7.