This is the plugin from Grifflicious youtube video : https://www.youtube.com/watch?v=zbW7jIav2e8
Explanations of the values :
- First Jump Hold : How long you pressed the first jump
- Second Jump : The time between when you release the first jump and when you press the second jump
- Vertical Pitch Percentage : The percentage of how much you held your joystick to the back during the whole movement
You can change some adjustments such as the location of the bars if you want. Now just go in freeplay !