activate and animate a postprocess effect on keypress for 2 seconds

So more deets on what i currently have…

1 i press a key, and it activates a speedchange for the fps camera for 5 seconds then goes back to normal
2 a post effect material

Inside the character blueprint, ive added a postprocess component so i can get a reference to it.

But its either on or off, depending on what i choose for in the materials intensity.

i also wonder if i can somehow use the postprocess components setting where i placed the pp materials “rendering features” Postprocess materials arrays value 0-1 to to fade it in or out aswell.

what i want to do.

when i press the key and it activates the speedrun, and at the same time animate the postprocess material for 2 seconds and then fade to zero distorsion til it looks normal again.