Calling named filters from another filter

Hi, i did not find anything for this on the internet, so sorry if that topic was discussed already before. I have a named filter and I like to call this filter from another filter. filter peers_v4_in() { ...... };

filter special_peer_v4_in() { ......; peers_v4_in(); }; protocol bgp myspecialpeer { ipv4 { import special_peer_v4_in(); }; };

Is this even possible? Thank you. Michael.