When i revive a pokemon in battle it will "revive" it but i cant send it out in that battle and all my other pokemon will be fainted but still cant send the revived one out. also it doesnt show that its revived it still shows that its dead. tried many times no errors in console tried with just pixelmon mod same thing. Also when battle is over the pokemon will be revived in inventory but never during the battle i revived it in.

Thanks for the report. There's already a ticket up for this issue, so keep an eye on that one for the issue's status. You can find it here: https://pixelmonmod.com/tracker.php?p=2&t=13578