floating objects in halo 3 not working?

[Jef J]

can you make an object in halo 3 last resort map float by holdin it in the air and saving and quiting and be able to walk on it?
it doesnt work wen i do it

 

[Bored At School]

You can make anything float in any level but first you need to place an object under the object you want to float, then once you've placed the object that you want to float on top of the other object, delete the object holding up the object you want to float.