Use Ease Actions on CCSequence?

Hi all,

I want to know if I can use Ease actions like CCEaseIn on CCSequence which contains a bunch of CCMoveTo ?
I tried it and it doesn’t break the game, but the result looks quite strange, and there’s some guy online say that Ease actions cannot be used on CCSequence, is that true?
If I create a customized action, how to make sure it can work under Ease actions?

Thanks,
-Yi