let growAmount = 1;

let grow = false;

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(0);

  circle(200,200,dia)

  if (keyIsPressed === true){

    grow = true

  }else{

    grow = false

  }

  if (grow == true) {

    dia += growAmount

  } else {

    dia = 10

  }

  console.log("diameter", dia)

  console.log("grow", grow)

}

​

​