Progress bar percent and text

Hello guys,

i’m trying to set a text and change the progress bar color via percent and encountered some problems:

i’m doing to bindings on my progress bar:

here i’m setting up the percent:

And the color:

But encountered two problems first when i lose health the progress bar changes in size but not in color and when i debug the percent value it countinues on 1 and when i respawn the player my progress bar dont fill up. Can you guys give me some light?