Print when saving a shipment

Hi

In user-exit for VT02N (EXIT_SAPLV56U_005) I would like to add the functionallity (in certain circumstances) to print a label for the specific shipment.

Does anyone know if there is a FM, or something else that I can use to add a print-out.

I did find this Process Output types through program - ABAP Development - SCN Wiki

but I was not working for me (I will keep trying to see if I can get it work).

Best regards