Adding BGP routes to an address list

Hi Guys

I am trying to get all my learned BGP routes into an address list for further firewalling.

I have tried this but this is wrong:

/ip firewall address-list add address=[/ip route find where distance=20] list=bgp

Any ideas?

http://wiki.mikrotik.com/wiki/Generate_bogons_firewall_chain_based_on_routing-marks