Sequence of execution of routines in a Transformation

I have created a transformation with a number of ABAP routines and need to be able to pass data between these in global variables. This requires that the routines are executed in a specific order. In update rules it was always from top to bottom routine, however in the transformation it appears that they are executed in the sequence they were created.

Can anyone confirm this and let me know it there is a way to change this sequence without deleting the routines and recreating in the correct sequence??

Obviously if not I can derive everything a one routine, but this will become a bit unwieldy, so keeping the seperate routines would definately be best.