Route-reflect - does anybody use it?

Does anybody use route-reflect=yes? For me it does not work. I have following setup:

A----B----C

Routers A, B and C are in the same AS, A and C have bgp session with B. On router B I have route-reflect=yes in peers A and B. But A doesn’t see prefixes from C and vice-versa.

Anybody using route-reflector on Mikrotik with success?

Regards,

Gregor.