how to change the size of a sprite from script unity code example

Example 1: how to change spriterenderer size from c# script

void Start() {   
   spriteRenderer = GetComponent<SpriteRenderer>();     
   spriteRenderer.drawMode = SpriteDrawMode.Tiled;  
   spriteRenderer.size = new Vector2(5,1);
 }

Example 2: how to change spriterenderer size from c# script

sprRend.size = new Vector2(3, 1);