export function maxValue(values) {
  let highestValue = 0;
  let firstTest = true;
  for (let i = 0; i < values.length; i++){
    if(firstTest === true){
      highestValue = values[i];
    }
    firstTest = false;
    if(values[i] > highestValue){
      highestValue = values[i];
    }
  }
  return highestValue;
}