Repeating life/heart system on the HUD?

Now it’s looking identical to what I have and mine’s working.
When health becomes 0, does it always display half a bar, or the previous health amount? I mean, does it display 0.5 bar even if the previous hp was say 5.2?
Is it possible that you query the health and if <= 0, it does not update the widget?

My nodes:
Hearts7.png