Draw Material on HUD problem

[Smomo]

I want to create a “Life” on my hud, below is my material

I want this circle to behave like radar, as you can see when “life” value is 0.8, it almost be full, when 0.4, it less than half.

Problem is, when I draw it on HUD, it disappear( Fully transparent)

but if I connect the wire without “Floor” node, it will appear (See image 2)

Why? I need that “Floor”, please help.

[FamousMaxy]

I don’t know if this is late but you need to set the material domain to user Interface.