How to use destiny bond

Tell me pls

Destiny Bond doesn't work atm.

But once it's working: You must use Destiny Bond and the Poke has to faint by the next attack of your opponent, then it will take down the opponent too. Note: You don't have to hit first, Destiny Bond also works if the opponent hits first, then you use destiny bond, and in the next turn the opponent faints your Poke. BUT If you use Destiny Bond first, then the opponent hits you, then he hits you again with a priority move in the next turn, destiny bond won't work.