Writing routines in transformation rules

Hello all,

We are right now on SP07. I dont still see any routines coming over. So are the routines actually going to be delivered. I am working with this 0PUR_C01 cube and I am trying to write routines for e.g Delivery date variance 1, Delivery date variance 2 etc. Can someone tell me what can be a good starting point to write these routines. I can see the code from 3.x version in old update rules. Has anyone actually gone through this process.

All suggestions are appreciated.

Thanks in advance,

Kiran