hi how do i rweak an ai package in a script. its a patrol package

That question reads as way, way too general for anyone to be able to help you.

You sound like you need to get some background put together to be able to understand it.

This tutorial has a section which discusses in-game work with patrol packages - -
http://geck.gamesas.com/index.php/gamesas_Tutorial_NPC_population

This is the GECK WIKI entry for packages -
http://geck.gamesas.com/index.php/Category:Packages

I suggest you take the WIKI and the bethesda tutorial links and run with them ( http://geck.gamesas.com/index.php/Main_Page ) instead of trying to get a full explanation on the forums.