How do you beat count dooku. It wont let me use the force to send back his lightning

while one of your characters are beeing zapped and paralised use the other to attack him repeatively do this to beat him

Yeah this did not work, Yoda could not get close enough to attack Dooku.

Get a friend its easier with 2 peple.

if u bought super jedi slam in da extras da slam might be big enouhgh to hurt him dat how i won

You don't need anything special or another player...
First get yoda and obi-wan both close together and as close as possible to count dooku's force bubble. Then when the Count zaps you, quickly switch characters to the other guy. The Count will not stop his lightning attack on the first character, nor will he defend himself and his force bubble will be down too. So charge him fast and you should be able to give him a couple of hits before he finishes zapping your partner. Use the special Double-jump jedi attack to really do damage. This should knock Dooku down and if you time it right, and keep the double jump attacks coming, he won't be able to recover. But even if he does recover and pushes you out of his force bubble, and zaps you again, you just need to repeat the process and it should only take two or three more times before he's done.