How do I make the health bar dissapear

Hi. i am Geki.

i already have Construct 2 for awhile, but i still not making any game.

i found this forum and i saw a lot of great games been made with Construct and it really motivated me so much.

now, i am making platformer game and i kinda know about the control and make event.

but i have problem about my health bar UI

the health bar is on top right corner. i want to make everytime my character get hit by bullet, the health bar will decrease until my health value of my character gone zero, it will dissapear all.

Can you guys show me how to do it ?

and actually i am need knowledge of Level Design too. Do you guys now where tips of level design or where i can read about Level Design ?

......... i want to make everytime my character get hit by bullet, the health bar will decrease until my health value of my character gone zero, it will dissapear all.

Why?!...I think this looks better

see the difference

Example.capx

(Stable Release (r212.2))

sorry, for late reply. Thank you very much. really help me alot.