How do I Create random Fly movement

Hi, i would like to create a random movement like fly in bedroom , how can i do this plz , and so it wont leave the layout and only flyes in certain height

Copied from another topic:

fly-example

And this is the code for that one:

Excellent, thank you, and how can i limit the Y position so the fly wont fly too close to the floor, so there would be minimum Y.

ex32 while you are on roll ask him to finish the game for you as well