Using MIDI CC to ramp up reverb mix?

  • What the title says. I'm trying to use midi commands to steadily ramp up the mix of my reverb over time. I know CC#70 with a value of 0 will se the mix to 0%, and value 127 will set the mix to 100%, but is there a way to make the mix steadily rise instead of changing suddenly? Any info is much appreciated!:)