Training of scripts for the Glider

I operate the parts of glider by scripts as below,
1) retrieving the fore/back gears 5prims
2) retrieving the propera and engine unit 3prims
3) adjusting the position of control stick 1prim
4) operating the spoiler 1prim
5) radar 1prim
6) elevator 1prim
7) text of drive-mode upper the elevator 1prim

The home work from my teacher was "Use only 1 script in the root prim ! "
Woommm, very difficult ;(

I used to use scripts in the child-prim and link-messages.
Teacher said "Use new funciton llGetLinkPrimitiveParams from Server 1.38"

I had tried and tried for about 3 days.... :)
Then I have finised them in one script in the root prim.
It seems to become simple, becuase do not use link-messages :)