First person camera vignette, how to increase/decrease intensity dynamically?

[ClockworkOcean]

@hillofgold

I’m trying to create this effect to make the player look more tired the more they run. How do i make the vignette intensity value go higher the lower the player’s stamina? I have a float for current stamina but i’m not sure where to start with this. Please help!

You can get at it from the player camera like this: