GetKey decreasing the value per frame by time.delta

Questions & Answers
1

I want to make an GetKey on mouse1 it be decrease the “timeofvalue” to 0 by time.delta or fixed delta it doesnt matter pls help

       if (Input.GetKey(KeyCode.Mouse1) && timedown == true)
        {

            timeofvalue += 0.01f * Time.fixedDeltaTime;
            vignette.intensity.value = timeofvalue;
            
        }
        if (Input.GetKeyUp(KeyCode.Mouse1))
        {
            timeofvalue = 0.30f;
            vignette.intensity.value = timeofvalue;

        }
2

i made a if statment to check vignette can be change or not ? and if it is then runs my code

if (vig == false)
        {
            if (timeofvalue1 <= 0.30f)
            {
                vig = true;
            }
            else
            {
                timeofvalue1 -= 0.02f * Time.fixedDeltaTime;
                vignette.intensity.value = timeofvalue1;
            }

        }