How do I destroy 1 instance

if i set that if player health is < 0 then 1 heart should destroy but all hearts are destroying!

Double click the heart sprite. At frame 1 duplicate the heart 2 times. at frame 2 duplicate only 1 time, and frame 3 will have only 1 heart.

FRAME 1 = 3 hearts

FRAME 2 = 2 hearts

FRAME 3 = 1 heart

Then simply , set the animation frame when needed. If Health = 0 , set heart animation frame to 2. and so on

or......

cannot beat Korbach muhahah