Regarding Output types

Hi Friends

I hava create a ZFIN output type and what i need is i have written a Processing Routine ABC which is link to this output type . When i go to VL32n transaction which is for inbound delivery there after putting a valid delivery number it shows a detail about tht delivery . Through menu if we select Delivery output and select ZFIN as output type with medium as special function and partner function as CR (forwarding agent) i am not able to go in the associate proccessing routine ABC through breakpoint pls let me know how can i know the routine is triggerring or not.

Thanks

Dhiraj