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![becky hayes](https://uploads.teamtreehouse.com/production/profile-photos/4879022/micro_static1.squarespace.jpg)
becky hayes
2,226 PointsHaving trouble writing the method to add points to width and height
The challenge is to create a method called incrementBy which will accept a paremeter named 'points' - which i think i've done correctly but then it says (within the method add points to the width and height properties) i'm stuck as to how to do this within the method
class Button {
var width: Double
var height: Double
init(width:Double, height:Double){
self.width = width
self.height = height
}
func incrementBy(points: Double) {
height = height * points
width = width * points
}
1 Answer
![Luke Dawes](https://uploads.teamtreehouse.com/production/profile-photos/1995002/micro_Profile.jpg)
Luke Dawes
9,739 PointsHi Becky,
It looks like the Code Challenge is asking you to add the value of the points
argument for incrementBy
to the width
and height
stored properties. In your code above, you have instead multiplied the values of those stored properties by the value of points
and then reassigned those values back to the stored properties, which isn't quite right.
This passed for me in the Code Challenge:
class Button {
var width: Double
var height: Double
init(width:Double, height:Double){
self.width = width
self.height = height
}
func incrementBy(points: Double) {
width += points
height += points
}
Hope that helps!