BungeeCord & MCPC+

Hi, I have a big problem with my bungeecord server.
I have 5 spigot servers running with bungeecord and I have 2 with MCPC+
The proglem is I can't connect MCPCs servers to bungeecord...
I search on internet but nothing can help me...
I also have a friend who did it but he can't hel me too...
Is this a bungeeCord problem, version etc...

Thanks.