depleting health bars

i? working on a project and i want my health bar to deplete over time like 1 health per second but i can figure it out. can someone please help?

Use a timer for every second,
to the in of number that it takes (-1),
to the + of your max number,
to the value of bar

example:
2019.05.09-12.08

Flowlab Game Creator - Breakout of Friction - Google Chrome 5_10_2019 5_31_44 AM

thank you