[j-nsp] how to populate a forwarding routing-instance

[Bit Gossip]

Experts,
I want to configure FilterBasedForwarding and so I need a 
routing-instance of type forwarding.
I have no issue to populate the routing-instance with static routes; but 
in reality I would like to use bgp to populate it; and this doesn't commit.
Is it possible to use bgp for that? If not, any other way to achieve FBF 
using a routing protocol rather than static for the alternate forwarding?
Thanks,
bit.

lab at rc2# show | compare
[edit routing-instances]
+   PIPPO {
+       instance-type forwarding;
+           router-id 1.1.1.1;
+           autonomous-system 1;
+       }
+       protocols {
+           bgp {
+               group BC {
+                   neighbor 2.2.2.2 {
+                       peer-as 2;
+                   }
+               }
+           }
+       }
+   }

[edit]
lab at rc2# commit check
[edit routing-instances PIPPO]
  'protocols'
    Protocol BGP not allowed under forwarding (0x1) instance PIPPO
error: configuration check-out failed

rc2# run show version
Hostname: rc2
Model: mx480
JUNOS Base OS boot [9.3-20090213.1]