[c-nsp] BGP Route Filtering

[M K]

Hi
I have two IOS XR boxes , am establishing iBGP relation based on their loopback 0 interfaces
What am trying to do is to filter a route from being advertised

RP/0/0/CPU0:XR2#sh bgp ipv4 unicast neighbors 10.10.10.10 advertised-routes
Wed Jun  4 17:52:20.748 UTC
Network            Next Hop        From            AS Path
192.168.2.0/24     20.20.20.20     Local           i
192.168.12.0/24    20.20.20.20     192.168.202.2   4i
192.168.21.0/24    20.20.20.20     Local           i
192.168.22.0/24    20.20.20.20     Local           i
192.168.44.0/24    20.20.20.20     192.168.202.2   4i
192.168.144.0/24   20.20.20.20     192.168.202.2   4i
192.168.202.0/24   20.20.20.20     Local           i
192.168.222.0/24   20.20.20.20     Local           i

Processed 8 prefixes, 8 paths

XR2
prefix-set R2Lo3
192.168.144.0/24
end-setroute-policy NOADV  if source in R2Lo3 then    drop  else    pass  endifend-policy router bgp 1 neighbor 10.10.10.10  address-family ipv4 unicast   route-policy NOADV out

But the route is still being advertised

What is the issue?

Thanks