Control Opacity HUD based on health

[Fatalys93]

My problem is really simple but I can’t figure it out
I’ve a Widget that shows up a blood screen based on my current health.
This is the HUD and you can see that I bind “color and opacity”

In the graph I’ve the same nodes that I use to control the progress bar of the health (it works of course).
So, I divide Health/MaxHealth to obtain a value between 0 and 1. with this value I make a color but I change just the alpha channel.
Why it doesn’t work?

[D4ddyF4tS4ck]

There should be a opacity variable in the material itself. Depending on your health, the opacity is directly proportional to it.

[Fatalys93]

But here is not about Material. it is just an image in a widget and opacity is a value between 0 and 1, so, if I have for example 50/100 health, my result is 0.5 and this value in alpha allows me to see the blood with half opacity. RGB values are set to 1, as default

[Arc4dia]

hp is minus 100 then get absolute value then divide by 100