Choose your trigger box and then go to BP and type in OnAc and scroll up a bit if you dont see ((On actor begin over lap)) Click on that and then draw node ((PLAY ANIMATION) from there and choose which compatible animation you want to play. Lets say you want robot jump animation but you choose bird jump animation that will not work. Only robot animations will work. You can also choose (( On Ac END )) over lap to to what ever you want to do on EXITING the trigger box.