Hey guys, need a little help...

I'm playing skirmish with some friends, and we didn't agree about Vader and Chewbacca fixes.

Both deployments have +1 damage. This damage applies only for attacks ir they can use this bonus to slam ir force choke?

It's just for attacks. Their other abilities don't even count as attacks, the defender doesn't get to apply +1 block, right?

That's correct: you can only spend Block/Evade tokens while defending against an attack...not against a special ability.

Similarly the +1 dmg on Vader's and Chewie's fix cards are only applied to their attacks, and not to their special abilities.