To send 32bit values you need to use extended communities.
You can use route-targets or site-of-origin to send extended community.
/routing filter add action=accept address-family=ip chain=TO-DOM.RU comment="Announce BGP customers 32bit AS" protocol=bgp set-route-targets=212461:200 add action=accept chain=TO-AS212461 prefix=0.0.0.0/0 prefix-length=0 add action=accept chain=FROM-AS212461 prefix=80.66.86.0/24 set-route-targets=212461:200
