Silly question about bgp_local_pref

Hi! Can someone show me a working example how that works with iBGP? I've tried with: protocol bgp bgp4_1_2_3 { import filter { bgp_local_pref=150; accept; }; etc.... }; without any success with 'show route': bird> show route 10.20.30.0/24 via 1.2.3.4 on igb1 [bgp4_1_2_3] 16:28 from 1.2.3.5] * (100/5) [i] -- //fredan