Unity2D: Scaling image in scene window - unity3d

Question

I have this script:
public Sprite[] Images; //Index starts at one because we are setting the first sprite in Start() method
public int _Index = 1;
public float width;
public float height;
void Start(){
//Set the image to the first one
this.gameObject.GetComponent<SpriteRenderer>().sprite = Images[0];
}
public void onClick(){
//Reset back to 0 so it can loop again if the last sprite has been shown
if (_Index >= Images.Length)
_Index = 0;
//Set the image to array at element index, then increment
this.gameObject.GetComponent<SpriteRenderer>().sprite = Images[_Index++];
}
that works perfectly, what it does is that it changes the image of and object OnClick once all images has been shown it loops. However I can't scale my images manually in my scene window nor through script. Is there an easier way of changing my script to be able to manually scaling my images in my scene window. (I would rather scale my images in my scene window rather than through script because I would find it easier) Please and thank you :)
Second Edit
This is what my script looks like now:
public Sprite[] Images;
//Index starts at one because we are setting the first sprite in Start() method
public int _Index = 1;
public float width;
public float height;
public float lastWidth;
public float lastHeight;
void ResizeMe()
{
this.width = 1.567892f;
this.height = 1.07f;
}
void Update()
{
if(this.width != lastWidth || this.height != lastHeight)
{
ResizeMe (this.width, this.height);
this.lastWidth = width;
this.lastHeight = height;
}
}
void Start(){
//Set the image to the first one
this.gameObject.GetComponent<SpriteRenderer>().sprite = Images[0];
}
public void onClick(){
//Reset back to 0 so it can loop again if the last sprite has been shown
if (_Index >= Images.Length)
_Index = 0;
//Set the image to array at element index, then increment
this.gameObject.GetComponent<SpriteRenderer>().sprite = Images[_Index++];
}
Thank you :)

Answer 1

declare 2 more variables
lastWidth
lastHeight
in the Update() function do something like
if(this.width != lastWidth || this.height != lastHeight)
{
setSize(this.width,this.height)
this.lastWidth = width;
this.lastHeight = height;
}
create a setSize function to do the actual resizing.
Now when you change the public width,height variables from the editor the update will pick on the change and run your resize script