help with Spanish la Liga

Can somebody explain how registration works in la liga.

I know we are allowed to register 25 players.

Then in the rules of la liga it says i can play 6 B Team players. THis players must be under 27 years old.

But in FM 2008 we could register first team and B teams aswell. Now i only can register first team.

I've tried to send players under 27 to B Team once i'm supposed to register players, hoping they will be inscribed in B Team. But No, they are not able to play La Liga matches. I send some yongster like Pique, caceres and also Toure, who is 25. I even tried Messi. None of them can play by first team.

So, we can only have 25 players? It's a little short.

Or please somebody can give me a clue on how to have 25 players plus some B Teamers.

Usually my squad has 27 or 28 players.

The idea would be like i did in FM 2008. Young players, no mattrer how good, were registered by B team, allowing me to sign some pleyers. This way it doesn't matter to sign players, since only 25 can play.

I'm confused. If please somebody can enlight me...

You now have B and C team managers in FM09. That might affect it.

In FM09 B teams are feeder clubs, they have own manager that registers players for B team, you can still use those players in your matches.

But i did put some pleyrs in B Team hoping they would be registered, one of them being Messi, but they aren´t.

Once i got them back in first team they are not allowed to play

Unfortunately, SI have broken the Spanish leagues with their attempt to create semi-independent B teams You simply can't play B, C, or U19 players unless they're in the 25 man squad.

so is what arogro saying is that for some reason his B team manager didn't register Messi? Or that he did register him and he can't plaY?