Alert dynamic recipients

Hi all,

I'm trying to send an alert to recipients that are determined during runtime. The scenario is: bpm gathers messages from different systems and depending on their content sends alerts to corresponding recipients(right now alert is sent just to one fixed recipient). In alert help documentation http://help.sap.com/saphelp_nw04s/helpdata/en/49/cbfb40f17af66fe10000000a1550b0/frameset.htm it's declared that it's possible(Application Determines Recipients), but actually it's not explained 😊

Thank you.